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化工离心泵-化工泵概述-石油化工设备专题? 化工泵适用于瓶、桶、缸、池或其他容器中抽取腐蚀性液体。 化工泵广泛应用于化工、石油、冶金、轻工、合成纤维、环保、食品、医药等部门。化工泵具有性能稳定可靠、密封性能好,造型美观,使用检修方便等优点。为提高产品质量、减少跑、冒、滴、漏,防止污染,改善环境,发挥很大的作用。 化工泵适用于化工、石油、冶金、电站、食品、制药、合成纤维等部门输送温度在各种℃的腐蚀性介质或物理、化学性能高的介质。 化工泵产品主要有:各种 玻璃纤维 化工泵、耐腐蚀塑料泵、高温化工泵、标准 化工流程泵 、 磁力驱动泵 等。 化工泵用于泵送清水,含有磨蚀性的,对普通泵体材料有害的物质、悬浮的、对不锈钢材料有腐蚀的、非爆炸性的物质; 化工泵同时广泛应用用于供水; 用于供热、空调、冷却和循环系统; 用于民用及工业用途;用于消防;用于灌溉;用于日常用途及民用,工业,园艺,灌溉用途;用于雨水积蓄工程;用于必须低噪音的场合;用于增压,适合输送腐蚀、爆炸性、颗粒的水或液体;适合管网增压;查看更多 1个回答 . 2人已关注
硫磺一二三冷? 硫磺 冷却器 在出开工及升温时用蒸汽保护是不是一直用蒸汽保护而不需要加水?何时注水?(在升温完成后引酸性气时开始注水?还是别有方法)如此时注 水冷却器 温度较高会不会有影响?查看更多 10个回答 . 4人已关注
转化炉热电偶烧坏如何处理? 10万吨焦炉气制 甲醇 工艺中转化炉的 热电偶 烧坏了如何处理? 都是那些原因造成的? 查看更多 10个回答 . 1人已关注
茂名石化前景? 大家谈谈茂名石化怎么样?查看更多 22个回答 . 1人已关注
渗透蒸发膜世界范围内有名企业? 昨天发帖范围是不是太大了,今儿收缩一下。 我知道的GFT……查看更多 1个回答 . 3人已关注
转载:伺服电机的几种制动方式? 用户往往对电磁制动、再生制动、动态制动的作用混淆,选择了错误的配件。   动态制动器由动态制动电阻组成,在故障、急停、电源断电时通过能耗制动缩短 伺服电机 的机械进给距离。   再生制动是指伺服电机在减速或停车时将制动产生的能量通过逆变回路反馈到直流母线。经阻容回路吸收。   电磁制动是通过机械装置锁住电机的轴。 三者的区别: (1)再生制动必须在伺服器正常工作时才起作用,在故障、急停、电源断电时等情况下无法制动电机。动态制动器和电磁制动工作时不需电源。 (2)再生制动的工作是系统自动进行,而动态制动器和电磁制动的工作需外部 继电器 控制。 (3)电磁制动一般在SV OFF后启动,否则可能造成 放大器 过载。动态制动器一般在SV OFF或主回路断电后启动,否则可能造成动态制动电阻过热。 选择配件的注意事项: (1) 有些系统如传送装置,升降装置等要求伺服电机能尽快停车。而在故障、急停、电源断电时伺服器没有再生制动无法对电机减速。同时系统的机械惯量又较大,这时需选用动态制动器动态制动器的选择要依据负载的轻重,电机的工作速度等。 (2) 有些系统要维持机械装置的静止位置需电机提供较大的输出转矩且停止的时间较长,如果使用伺服的自锁功能往往会造成电机过热或放大器过载。这种情况就要选择带电磁制动的电机。 (3) 三菱的伺服器都有内置的再生制动单元,但当再生制动较频繁时可能引起直流母线电压过高,这时需另配再生制动电阻。再生制动电阻是否需要另配,配多大的再生制动电阻可参照样本的使用说明。需要注意的是样本列表上的制动次数是电机在空载时的数据。实际选型中要先根据系统的负载惯量和样本上的电机惯量,算出惯量比。再以样本列表上的制动次数除以(惯量比+1)。这样得到的数据才是允许的制动次数。查看更多 0个回答 . 2人已关注
液化气芳构制高辛烷值汽油技术? 谁有 液化气 芳构制高 辛烷 值 汽油 技术,谢谢!查看更多 16个回答 . 5人已关注
为什么我在线120小时了没有加分呢? 为什么我在线120小时了没有加分呢?查看更多 2个回答 . 3人已关注
破涡器的作用是?设计原则是什么? 很多承装液体的容器在其底部(出口去泵的管口)都设计了破涡器。我个人觉得主要是因为出口有泵,去除漩涡,保证泵不汽蚀。不知道这样理解对不?还有没有其他方面的原因?从设计上来说,设计破涡器原则是什么?与流体介质有关?希望高手 详细 指点!! [ ]查看更多 4个回答 . 1人已关注
液氯屏蔽泵? 各位老师,目前我们公司的液氯 屏蔽泵 出现了叶轮损坏现象,并且在泵体内发现SO[sub]4[/sub][sup]2-[/sup],如果是有前工序 硫酸 进入的,那么首先应该腐蚀的是 透平机 ,而透平机没发现被腐蚀的现象。求助各位大虾,谢谢 # hcbbs 查看更多 2个回答 . 4人已关注
导热油闪点问题? 有机热载体锅炉 的导热油,用过一定时间之后,其闪点是降低了还是增高了?为什么?查看更多 1个回答 . 4人已关注
TPR检测没信号,不出峰只有零基线,一点波动也没有是怎么回事?一直都是一条直线? TPR检测没信号,不出峰只有零基线,一点波动也没有是怎么回事?一直都是一条直线,什么峰都没有,是热导池还是检测器内部硬件什么有问题?查看更多 6个回答 . 2人已关注
求助关于HZSM-5的三个问题,请大神赐教? 1、HZSM-5和HZSM-23有何区别,这里的-5,-23指的是什么?2、有的文献上有HZSM-5(160)这里的160指的是什么,是硅铝比吗3、HZSM-5和ZSM-5有什么区别,如果我有ZSM-5,怎么把它变成HZSM-5呢查看更多 8个回答 . 2人已关注
四氟管的连接? 两根 四氟管 ,1/2英寸的,需要现场连接。要求连接处的密封性好,应该怎么连?好像不能焊接,用 卡套接头 吗?有没有别的办法?谢谢查看更多 5个回答 . 1人已关注
哪些流量计前需要加消气器? 哪些流量计前需要加消气器?比如说装车系统上的容积式 双转子流量计 ,这种应该加 过滤器 、消气器把?如果用 质量流量计 呢?需要加消气器不? 一般还有哪些流量计是需要加的? 查看更多 16个回答 . 5人已关注
关于橡胶新月形撕裂试片? 说说你们用的橡胶新月形撕裂试片上的割口是模具自带的,还是后来使用割口器切割的查看更多 1个回答 . 2人已关注
恶补英语-3? Lesson 13 Our nation abounds in opportunities for well-educated young men and women. He behaved in such arrogant manners in his firm that he was at last fired. It takes a long time as well as many experts working together to compile an encyclopedia. The murderer entreated the judge to show mercy, but was sentenced to death. The alley was filled with lots of garbage and other filth. It is incumbent on you to give a father’s advice before your son leaves home. At sea, everything that breaks the monotony of the surrounding expanse attracts attention. I hope I can reciprocate your hospitality some time. The shaggy dog always sleeps in the bed with her. Hunger, cold, and sickness were among the tribulations of pioneer life. He read many books in the adolescent stage of his life. One who is 15 years old is not an adult, but an adolescent. Adolph Hitler commanded autocratic power; no one could rigorously oppose his plans or decisions. All the furniture of the room was very congenial to my taste. The room was encumbered with heavy furniture. Every night the little girl was horrified by the tiger’s cry. It is now manifest that, if you don’t return the book to the library right now, you will have to pay a late fine. Good health is not always obtained by good nutrition. They could repress the uprising with the help of the army. They were accused of smuggling diamonds from foreign countries. There has been a tangible improvement in his schoolwork. The teacher drew an analogy between the human heart and a pump. The ship was tossed by the ocean billows in the storm. The bomb was detonated from several miles away; it caused no damage to our town. The fly became entangled in the spider’s web. During long severe winters some animals, such as badgers, ground squirrels, and some insects, hibernate. By experience with all kinds of people the doctor has developed great powers of intuition. Many rivers in Taiwan are polluted with filthy waste from factories. She reveres her grandfather; he is strict in decision, but shows great affection to her. The hermit led a solitary life in the deep mountains far away from the town. They owed their lives to the valor of the firemen. The brave knight defeated each antagonist who came against him. As the doctor was fully cognizant of the patient’s serious condition, he acted swiftly to relieve it. His doleful expression showed that he had failed in the examination. The facility of communication is far greater now than it was a hundred years ago. A free bus to the airport is a facility offered only by this hotel. He improvised a new stanza form the school song at the football game. The old lady was very inquisitive about what her neighbors were doing. The policeman stopped the man when he saw a gun protruding from his pocket. He used to say that argument adds a savor to conversation. Much of the city was subverted by the earthquake and a great fire. Lesson 14 He is addicted to alcohol and drugs. Doctors and policemen disagree on how to control drug distribution and handle addicts. He is assiduous at his studies; he works hard and steadily, and pays continual attention to his teacher. The two men conspired to steal the jewels and then sell them to a jeweler in another country. He is such an elusive person; you never know where he is when you want him. A cheap, gaudy steamboat arrived at the wharf from St.louis. He ignited the match by scratching it on the desk. The trade union is negotiating with the employers to get a better contract. Respiration is difficult at great heights and some mountaineers wear oxygen masks to overcome such difficulty. The speaker made a few funny jokes to add spice to his speech. The committee accepted the proposal with unanimous approval. The pore of the allies’ aggregated together was great, though individually some were quite weak. His various wages for the year aggregated $22,000. Their conversation was banal full of uninteresting remarks, such as “nice weather” and “slow traffic today.” Taking a rest in the mountains is ferried curative for breathing difficulties. The robbers enforced obedience to their demand by threat of violence. No one in the village likes the man because he is a shameless hypocrite. It is illegal to intercept a letter or parcel before it is delivered. Their enemies persecuted some early religious leaders. “Don’t hurry!” Said her father in sarcasm as she slowly dressed. We have enough food for the picnic; any more food would be superfluous. The report of the committee of inquiry completely vindicates him and declares his action to have been right and proper. A smile animated her face as she went to the gate to meet her husband. Many scientists now believe that there are some worlds in outer space having animate beings. Chivalry includes bravery, loyalty, honor, courtesy, respect for woman, protection of the weak, and generosity. A doctor cannot treat an illness until he had made a diagnosis. The teacher exemplified the use of the word for the students. When a war impends, wise men try to prevent it in advance. The speaker had a really noble voice, which he could modulate with great skill. The teacher’s prophecy that the boy would become a great national leader was later fulfilled. After hard work we could feel the sensuous delight of a hot booth. A minister of foreign affairs who lacks tact is a dangerous man. The vindictive little girl tore up her sister’s papers. If you hand in your report late, append a note explaining the reason for the delay. The Plains Indian has a plentiful and regular supply of meat and skins by the communal buffalo hunting. After learning ecology I could see the relation of living things to their environment and to each other. He’s deserved to be punished several times, but I’ve forborne from dong so. It was a matter of indifference to him whether his hands were clean or dirty. He was a mediocre student; his academic records were not excellent, but not bad, either. He rehearsed the story of all his sufferings in prison. We rehearsed our parts for the school plays. It is unwise to make yourself so singular in your clothes. My mood is only transient; it will go away pretty soon. Lesson 15 The two surfaces adhered to each other, and we couldn’t get them apart. He had the audacity to go to the party without being invited. The contiguity of the house and the garage was a convenience in bad weather. The witch had enchanted the princess so that she would sleep for a month. As the watched the Niagara Falls, he thought of the grandeur of nature. From her story we inferred that they went to the United States unwillingly. I cannot write a letter, my fingers are numb with cold. Please remit the amount of your bill by check. The girl was accused of stealing a pair of shoes, but because of her young age the judge remitted the prison sentence. His skeptical remark about the team’s chances of winning made us gloomy. The urban population of Taiwan has greatly increased during the last ten years. This is serious, I am afraid we’ll have to amputate his leg. All the people in the party were disgusted with his bawdy jokes. She is very attractive in spite of her slight deformity. It took a long time to excavate the ancient city of Troy. In olden times the coasts of England were frequently harassed by the Vikings. He does not drink at all; a little wine may intoxicate him. The placid lake reflected the image of the old castle. Mary kicked Susan, and Susan retaliated against her by biting. The cat found a bird sitting on the branch and crept with stealthy movements toward it. He lied to me about my friend, and I have been very wary of him ever since. Three survivors told us in detail how the regiment was annihilated by the enemy. In telling a story we usually follow chronological order. They are planning to divert the river to supply water somewhere else. The moonlight on the lake enhanced the beauty of the scene. The criminal has been imprisoned in a dry cell for almost 10 years. Do not bear malice toward him, he is a good mean by nature. The driver was prosecuted for exceeding the speed limit on the express way. He started an inquiry into the cause of the fire, and prosecuted it for several weeks. We were all amused by the satirical comparison of life at college and in the army. They subscribe to a monthly magazine in addition to several daily newspapers. He subscribed a large amount of money to the collection for the hospital. We heard a weird shriek from the darkness of the ruined castle. A guilty man apprehends danger in every sound. The thief who had stolen the jewels was apprehended by the police and was put in jail. She commutes from Cambridge to London every day. Heat and smoke emitted by the fire made it difficult for the firemen to put it out. The soldiers fortified the position on the hill by building earthworks and erecting log walls. The government inflicted excessively heavy income taxes on the people. She cut and painted pieces of paper that mimicked flowers so well that some people thought they were real. Her calm voice reassured the frightened child, and he felt much better. An exciting new serial story will begin in our next week’s issue. The tactics of pretending to cross the river and of making a retreat fooled the enemy. Lesson 16 He that never was acquainted with adversity has seen the world but on one side. My new shoes have made blisters on my heels. The clatter of metal plates was heard from the kitchen. Most of telephone dials use digital numbers. He cannot work today; he got a gash in his hand while axing. Even militarily weak and small nations have defied UN decisions with impunity. Plants grow much faster and stronger when they are given manure. Glass is not porous, it doesn’t allow liquid to pass through. There are a lot of shacks in the run-down part of the town near the railroad. The average life span of people has increased considerably since the 19th century. The strong winds twitched the paper out of her hand. The French battleships were placed within the power of Nazi Germany in accordance with armistice terms. It would be a breach of duty for the guard to leave before his replacement comes. To help a new student get oriented furthers the comity of the school. Some prisoners in the dungeon will be released tomorrow. He is a gregarious man; he enjoys the companionship of a large number of friends. The explorers incurred great dangers when they tried to cross the rapids. She has a small mole on the left side of her nose. The mole digs holes and passes underground and makes its home in them. He has applied for a patent on his latest invention. This coffee is very hot. Do not drink it quickly, but sip it. Sulfur is found abundantly in volcanic regions. This year’s upsurge in rice production is due to the new method of cultivation. Grandfather was an austere man; he used to be silent and very strict to us/ When I was in hospital, she called on me with a bouquet of roses in her hand. In the Pacific Ocean there are many coral atolls that are ring like islands. A group of schoolmasters are holding a forum on new ways of teaching history. On rainy days the students play games in the gym. “Not like that” he interjected while explaining how to take the machine into pieces. Some mushrooms are good to eat, some, such as toadstools, are poisonous. They escaped from the wrecked ship on a raft. The children looked like Negroes, their faces were smeared with soot. One end of a pencil is tapered off to a point. I have read this French play via English translation. Newspapers are often called barometers of public opinion. He complied with the doctor’s order that should take a rest at home. A coxcomb spends too much money and time on his clothes and appearance. In summer the house next door is hidden luxuriant foliage. She made her plan for her annual summer hegira to the Miami Beach. The hunters traced the footmarks of a tiger and at last they found him in his lair. The child had a terrible nightmare and awoke crying. This reservoir is large enough to supply water to the entire city. He bought some sod to put in the bare spots of his lawn yard. Rake up the trashes in the yard and burn it. We will have some guests tonight. The furniture will stay in the warehouse until they pay the storage cost. She volcano belched a staggering mount of fire, smoke, and ashes. It’s such a chore to do the shopping every day. When she was asked a sudden question, her face turned crimson in embarrassment. The fugitive had already packed and bought his ticket. Two women were quarrelling on the street, surrounded by a horde of people. Usually a linguist is skilled in a number of languages besides his won. The price of the petroleum has been raised too high during the last few years. Mary rumpled her dress by sitting on the floor. A person sneezes when he has a cold. She twined her arms around his neck and kissed him. When we got inside the factory, we couldn’t hear the guide explain because of the whirring of the motors. Lesson 17 An alloy is often harder, lighter, and stronger than the pure metals of which it is composed. The streets were not lighted at night during the blackout. Who is supposed to cater for your daughter’s wedding next week? He is cramming facts and dates for his history examination tomorrow. He crammed as many candy bars into his pockets as they would hold. If you paid $200 for the watch, you were fleeced. I saw it in a department store for $70/ The jungle is the natural habitat of wild animals and plants. I lost my key to the door, and I went to the locksmith to get a new one. He panted excitedly giving us the news as he had just heard it. Don’t use that old cart, it’s rickety. He has been stigmatized as a coward and liar. Having been in the desert without water for two days, his thirst was unquenchable. The astronauts of the United States are returning to the earth from the moon. One age bequeaths its knowledge to the next. In the United States there is a census every ten years. Everyone of the city was asked to join the crusade for better housing. The stream was so deep that we could not ford it. The dog hovers around the kitchen door every mealtime. They were all dressed up to attend the masquerade. He got a free ticket to the play by masquerading as a friend of the actors. The phoenix is believed to live for 500 years and then burn itself and be born again from the ashes. Some people prefer the dark bread made from rye to the white bread made from wheat. In the film he jumps off a running car and performs other dangerous stunts. The most exciting game in hockey, was Harvard versus Yale. Above all the artillery was the deciding factor in the battle. In the early days of the West many states paid a bounty for captured criminals. When he got a shot against typhus, the child clenched his teeth in pain. I saw a burglar, with a dirk in his hand, getting into the room where she was sleeping. The murderer entreated the judge for mercy, but was sentenced to the gallows. My steak, though delicious, was mostly fat and bones. Most of it was inedible. The morale of the football team was very low after its defeat. We are more prone to make mistakes when we are tired. We fell prone on the ground and drank water from the spring. The robbers grasped the peril of their position and scuttled away. The carpet was fastened to the floor with tacks. After his parents’ death, the court made him a ward of his aunt. The terrible avalanche buried the whole village, and very Jew people survived it. I was so in a hurry that I left my briefcase at home. The apartment is not commodious enough for his family to live in. The bourbon dynasty ruled France for more than two hundred years. After he got out of the bar, he suddenly began to yell drunken gibberish on the sidewalk. I invoked his forgiveness many times, but failed to move him. There are myriad of stars in the sky at night, we cannot count them. Thousands of men and women are working in the quarry to get stones for use in building the castle. Poverty and disease are common in the slums. He tinkled his coins together in his pocket. The swimmer caught in the whirlpool struggled to keep from drowning. We ended our blockade of the enemy’s port when peace was established. The fox likes to live in a burrow; it’s warm in winter and cool in summer. Destruction and suffering are corollaries of war. Many flattering relatives fawned on the rich old man. He groped for the light switch in the dark basement. He turned the latch of the door and opened it so gently. The soldiers were filled with nostalgia by hearing my old favorite song. The notes of the hunting horn resounded through the forest. The fireman splintered the locked door with an ax to save the boy in the room. No one in the place survived the crash; it crashed down into splinters. A truce was declared at Christmas between the two armies. There is not a single grammar book on the vernacular of this African tribe. Lesson 18 The use of anesthetics is less than a hundred years old. The fire on the hill was a beacon to the villagers that the enemy was coming. The coroner concluded that the death of the old woman was accidental. They decided to settle their quarrel by a duel. Peach trees can be grafted on plum trees. “First come, first served” is an impersonal remark. A large iceberg loomed through the thick, gray fog. As the speaker made a funny joke, peals of laughter rang through the auditorium. The missing cattle are discovered in the annual roundup. The cowboy worked all night to gather the cattle that had straggled behind the rest of the herd. He was suspected of having ulterior motives for making his generous offer, but in fact his offer was from the bottom of his heart. The old Chippendale chair was sold at a good price at the auction. The old man is famous for super calligraphy. Jean felt unable to cope with driving in heavy traffic after her accident. Please get some cucumbers in the vegetable section; I’ll make pickles. Her grandfather is 90 years old, and every mealtime she has to prepare gruel for him by boiling oatmeal in water. She hustled off her children to school and started working. Every year the army and the navy hold maneuvers for practice. She maneuvered her car into a narrow parking space with ease. He was in a terrible plight, trapped at the back of the cave. I came to the meeting to scoff, but the speaker persuaded me. She was stunned by the news of her mother’s death. A vulture usually lives on the flesh of DEAD animals. After his store burned, the storekeeper became a bankrupt. It suddenly began to shower, and we took refuge in the cavern. Chrysanthemum usually blooms in fall and shows great varieties in the size and color of its flower. The inhabitants of the port are occupied mainly with fishery. In a gust of uncontrollable anger he broke the picture in pieces. She tried to ingratiate herself with the teacher by offering some precious gifts. The reason why we lost the war was not just because of a shortage of munitions. The wretched slaves prostrated themselves before their master. The campfire smoldered for several hours after the blaze died down. The hail beat a loud tatoo on the windowpane. In a democratic system it is the people that wield the power. In his letter he alluded me to a matter which I had completely forgotten. A chisel and a hammer are indispensable tools for a sculptor. Mal crickets make a chirping noise by rubbing their front wings together. As we stepped into the bush, birds flitted from tree to tree. It was rather high-handed to punish the child for the accident. The child lagged behind others because he was very tired. You naughty boy! I told you not to play on the road. We used to hear the rattle of the milk bottles in the early morning. Soot is caused by incomplete burning and makes smoke dark. The Ohio River is one of the tributaries of the Mississippi River. The workmen mended the road, but a heavy storm undid their work. The children began to undo the string round the parcel to see what was in it. The rider belabored his tired horse with a stick. After dinner they walked around the circumference of the lake. In case of failure of direct descendants, the throne devolves upon the nearest prince. Don’t fret too much, everything will be all right. The wild geese honked high in the autumn sky. The government decided to levy a tax on tobacco, it had been free from tax. The new rule overrides all the previous ones. The scattered soldiers were rallied in the vale for the next attack. Many people sprawled on the beach in their bathing suits. The old man trudged through the deep snow back towards home. Lesson 19 The soldiers lay in ambush, waiting for the signal to open fire. The major ambushed his troops in the woods on both sides of the road. He is always bragging about what he can do with a car. Be sure that you cleanse the wound before bandaging it. The professor will deliver a discourse on the poetic style of John Keats. In World War II the general made it a point of pride to dig his own foxhole. The inflammation of his knee made it difficult for him to walk. The huge stone is so heavy that we cannot move it without a lever. In arithmetic we use the Arabic notation (1,2,3, and so on) or sometimes the Roman notation (I, II, III, and so on) A large ransom was asked for the safe return of the child. He sopped a piece of bread in milk; it was too crisp to eat. His cheek tingled from the slap she had given him. A large percentage of the budget is for armaments. On Sunday she gets up late in the morning and has a brunch around 10:30. His coffin was laid to rest in a deep grave. The mother envisioned her little girl as a prima ballerina. The gangster who had taken part in the robbery was arrested by the police. The ink had faded so that many words were illegible. The rebellion was started by some malcontents who had been dissatisfied with the policy. We will take a rest in the pavilion until the game starts. The prisoners escaped out of the jail under the shroud of night. The room soon filled with the water spurting from the broken pipe. He put varnish on the tabletop to protect it, but somebody has scratched it. Many old ballads are sung to new words. The butt of pipe stuck out from the wall where the sink had been removed. The goat butted the boy and knocked him down. You will have to call the consul before your passport is expired. Memories of happier days were enshrined in the old man’s heart. He gobbled the ice cream so fast that he got a headache. We had to listen to a long harangue about our own shortcomings. He spent the whole afternoon mowing the grass in the back yard. In the Middle Ages, many people used to go as pilgrims to Jerusalem and to other holy places in Europe. The formers sheared the wool from the sheep. He strangled her to death by a cord put around her neck. The kernel of the walnut is eaten by itself or used in cakes or cookies. Beavers are noted for their sill in building dams across streams. The cavalry is many superiors in mobility to the infantry. The floor creaked as he stepped on a loose board. The fir remains green all year and its needles are distributed evenly around the branch. During the heavy storm, airplanes should be kept in the hangar. The kernel of the argument is who discovered the islands first. What seems to be a cold often turns out to be the beginning of measles. With a huge puff the balloon was blown up and then suddenly burst. Sleet forms when rain falls through a layer of cold air. A woman, after marriage, usually drops her surname and takes that of her husband. Woman often wears wigs over their real hair for beauty of fashion. Bleached bones lay on the hot sands of the desert. Chariots were used in ancient times for fighting, racing, and in processions. He has been crippled since he broke his leg. Now he can’t walk without a pair of crutches. She flirted with many men but loved only one. They were very pleased to see some gulls flying in the sky, full of hope that they would soon get ashore. When I bought a new car, a kit of tools came with it. The hungry children did not leave a morsel of food on their plates. The strange mechanical device is the prototype of modern cars. They set a snare for rabbits on the hill, but unfortunately a wild cat was caught by it. When you squeeze the trigger, a round or rounds of ammunition are fired. When the burglar tripped the wire it triggered an alarm. The weir across the river stops or controls the flow of the river above it. Lesson 20 The students have access to the library only in the afternoon. Last year we had several floods, we had an excess of rain. Long age Eskimos learned how to adapt to the cold to live in the Arctic Region. The club adopted a new set of rules concerning its membership. His adverse criticism didn’t upset me, but encouraged me. My parents are averse to our picnic plan; they don’t approve of it. The government decisions whether to continue the project will affect the future of our national economy. I have warned him to drive slowly several times, but it doesn’t have any effect at all. The new secretary is sincere and quite without affectation. His gentleness and kind ways increased his colleagues’ affection for him. The preacher likes to make an allusion to Homer while preaching. The white walls create the illusion that the room is very large. My birthday party is the biggest annual event of my family. The judge annulled the contract because one of the signers was too young. The couple appraised the house carefully before offering to buy it. The club members were immediately apprised of his change of plans. We should try to settle the matter by argument, not by fighting. The king augmented his pore by taking over rights that had belonged to the nobles. The man assured himself that the bridge was safe before crossing it. He insured his car against accident, theft, and fire. Don’t forget to check your work to insure its accuracy. The doctor tied up the patient’s broken ankle with a bandage. They seem to love bondage more than liberty. Pack the books in a small carton to carry it easily. Political cartoons often represent the U.S. as a tall man with chin whiskers, called Uncle Sam. The novel was banned by the censor as likely to stir up suspicion of the government among the readers. Every dictator censors the newspapers in his country. The principal of the school censured the students for their rude behavior. Many people were killed in the collision between the bus and the car. The leaders of the collusion against the government were caught and punished. I have only one confidant to whom I can tell my secrets. The doctor felt confident that his patient would recover from pneumonia. I am Swedish. Is there a Swedish consul in Omaha? The council of ministers advised the king to dismiss the general. The young man refused to listen to the old man’s counsel. The murder suspect refused to answer the questions on the advice of his counsel. The Hopkinses run the biggest dairy farm in the state of Arizona. It is very rewarding to keep a diary of daily happenings. Upon his decease all his properties passed to his wife. Measles and chicken pox are two diseases of childhood. It is not decent to laugh at a crippled person. The road makes a sharp descent just around the corner. The three justices dissented from the Supreme Court’s decision. Dissent among the senior members was the main cause of the disintegration of the club.查看更多 1个回答 . 5人已关注
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什么设备,,猜猜看? 什么设备,,猜猜看,奖励啊!!查看更多 51个回答 . 2人已关注
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简介
职业:上海安赐环保科技股份有限公司 - 设备维修
学校:山东师范大学 - 化学化工与材料科学学院
地区:湖南省
个人简介:持续不断地劳动是人生的铁律,也是艺术的铁律。查看更多
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