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余良清叶菲墨
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来自话题:
化工设备设计力学基础? 下载这本书看一看。查看更多
来自话题:
工业上做Swern氧化是怎么做的?谢谢!? 我上次做的就是不锈钢低温罐做的,车间有现成的,没考滤就上中试:低温下草酰氯的腐蚀还好,不过后处理可以转到另一防酸罐中.查看更多
关于空分装置低温部分法兰垫片? 不要用四氟了,我去一个厂学习过他们的开车过程,他们的垫片用的是四氟,可能是冷、热紧没做到位,各种阀门各种漏,我们用的是缠绕垫片查看更多
来自话题:
用合成气制甲醇的动力学模拟? 谢谢楼主,我的模拟做完了 楼主可以把模拟流程分享看看嘛?谢谢查看更多
QUIZ:你能做对几道题(grammer & business)? 1. bily was happy to be the owner of a(n)____car. a. japanese expensive sports b. expensive sports japanese c. sports expensive japanese d. expensive japanese sports 2 . glance at the ____, and one can get a rough idea of what a book is about. a. list of content b. list of contents c. lists of content d. list of the content 3 . mum, i ' ll do the washing-up. bring me ____ please. oh dear, i haven't got any. try to tear a piece from the ____over there yourself. a. cloth, cloth b. a cloth, cloth c. a cloth, cloths d. cloth, clothes 4. erickson found a few ____mistakes in his composition. a. incorrect b. uncorrected c.uncorrect d. incorrected 5. the law may please some, but not ____. a. all b. at all c. any d. every 6. take this gun with you in case ____accident should happen. a. any other b. some other c. any d. some 7. i'm afraid we've spent ____ time on the text, which i think is ____difficult for the students. a. much too, too much b. too much, much too c. rather much, fairly too d. very much, much so 8. she moved to tokyo last june and has ____ got a job on a women's journal. a. later b. then c. since d. ever 9. our flight won't depart until 3 p.m. _____ we go to soon? a. need b. could c.shall d.should 10. let's try and finish cleaning the road before dark ____. a.falls b. had fallen c.fell d.falling 11. microscopes make small things appear larger than ____. a. really are b.are really c. are they really d.they really are 12. ____ in 1778, the thirteen original states worked together under an agreement called the articles of confederation. a. not until the constitution was adopted b. the constitution was adopted c. adopted by the constitution d. until the constitution was adopted 13. jean's uncle insists ____ in this hotel. a. not staying b. not to stay c. that he not stay d. staying not 14. i'll be happy if i ____ a new car. a. had b. would have c. have d. shall have 15. mrs. bennis said that she must have her car ____. a. repairing b. repaired c. repair d. be repaired 1. let's face it, he decides. he's the boss so he's the one that ........ . a. called it a day b. calls the shots c. call it quits d. chicken e. call his bluff 2. he says he will go elsewhere if we don't lower our price but i don't think he will. i think we should........ . a. call his bluff b. call it quits c. called it a day d. calls the shots e. chicken 3. someone is going to have to take responsibility for this disaster. who is going to ........ . a. can't win b. carry the can c. chicken d. a can of worms e. chicken and egg 4. she always like to think things through very carefully. she likes to ........ . a. chicken and egg b. chicken c. chew things over d. call his bluff e. call it quits 5. we need a loan to start the company and we need a company to get the loan. it's a........ situation. a. calls the shots b. chew things over c. chicken d. call his bluff e. chicken and egg 6. our silicone valley site is right at the ________ of the new technology. a. cut our losses b. cutting edge c. cut it fine d. cut-throat 7. we had to threaten them with legal action before they agreed to ________ the money they owed us. a. crocodile tears b. cough up c. cut our losses d. clear the decks 8. we'll have to drop everything else. we'll have to ________ and concentrate on this. a. clear the decks b. crashed c. cut it fine d. cut-throat 9. we can't access the computer files. the system ________ this morning and we cannot fix it. a. crocodile tears b. cutting edge c. cut our losses d. crashed 10. he said he was sorry about letting me go but i'm sure they were only ________ he was shedding. a. crocodile tears b. cutting edge c. cut our losses d. cost the earth 11. i'm sure a lot of our future income is going to come from the internet and other ________ activities. a. copped out b. cyberspace c. keep a cool head d. chew this over 12. i'm not an important person in this company. i'm just a lowly ________ . a. keep a cool head b. closing a deal c. coining it in d. cog in the machine 13. their products are really selling well. they must be ________ . a. copped out b. closing a deal c. coining it in d. chew this over 14. he isn't a very good salesman. he has a lot of problem when it comes to ________ . a. cog in the machine b. copped out c. cyberspace d. closing a deal 15. she didn't even try to raise the matter at the meeting. she just ________ completely. a. crash course b. copped out c. cut corners d. creative accounting 做完后,将答案回复。即可看到隐藏的答案。我商务英语仅对了9个。语法对了12个查看更多
烃类蒸汽转化置氢? http:///p-453645718.html 这份资料有制氢工艺流程介绍查看更多
哪个版本的加氢模块可以用? 回复 4# sevenbb 呵呵,有什么事不能在帖子里问啊。查看更多
来自话题:
机泵润滑方式? flood 和压力润滑有什么区别? oil ring 油环 flood 浸没 oil flinger 抛油圈 oil mist 油雾 grease 油脂 forced feed 强制润滑 pressure lube 压力油 查看更多
化工工艺图算手册? 打不开?????????????????????????????????查看更多
来自话题:
高于100米的塔一定要设计为两段吗? 不一定,可以设计膨胀节!查看更多
氢压机问题? 分离器作用有:1、分离压缩机出口的汽液分离。 2、为压缩机供应循环液。 3、合理的分离器液位保证压缩机的正常工作。 液位高低原因:入口进来的氢气是对应温度下的饱和水汽,压缩后会有液体水出来;另外即使分离后分离器气相出口也会带走部分水分,二者平衡导致根据不同负荷液位会逐步升高或降低。液位升高到高位时,分离器排液开关阀自动会打开排液,排到某个液位会自动关闭。液位降低到低位时,分离器补水开关阀会自动打开补水,补到某个液位会自动关闭。 氢气走向:入口--压缩机-分离器-分离器上出口; 液相(水):压缩机--分离器-循环液冷却器-压缩机 一直循环;多排少补。查看更多
酸的测定与硫酸的测定是一样的吗?? 其实是要测定含硫酸铜液的酸度是多少,该用什么方法呢? 给你硫酸铜国家标准看看,里面有硫酸铜中酸度测定方法。查看更多
注册安全工程师,考糊吗? 题目不觉得难呀。只要将所有的教材看完记住,肯定能过的。关键是否是真正用功了。查看更多
来自话题:
DCS系统是如何控制往复式压缩机的。? 谢谢楼上各位前辈回复。( ̄﹏ ̄m)( ̄﹏ ̄m)( ̄﹏ ̄m)查看更多
如何判断两器衬里的好坏? 首次开工烘衬里,如果严格按烘干曲线升温烘干,超温过一次,也不至于造成衬里脱落。出现脱落的原因可能是:1.没有严格按烘干曲线升温烘干, 2.施工质量不合格,不符合规范; 3.衬里质量不合格;(施工前未检验) 处理办法;拆除重新施工。查看更多
大家的常减压装置的泵子都是用的哪些厂家的? 做离心泵的厂家比较多,鱼龙混杂,嘉利特荏源的肯定是比较好的但价格不是一般地炼能承受的,其他的浙江科尔 ... 您说的比较全面,不过这些泵子你们厂都用过,还是见过别的厂用的效果查看更多
洗油全分析各项指标有什么联系? 各个公司的工艺不同 我们公司低萘洗油从冷却器出来的温度是60°左右查看更多
导热油总管垫片漏油? 检查一下法兰密封面是否有缺陷,法兰型式、压力等级选择是否合适。查看更多
75KW的泵的启动方式? 回复 2# jessehjx 还没说清电机参数就自己想象查看更多
来自话题:
甲烷化催化剂的一些指标? 有没有高人能告诉我,甲烷化催化剂在合成sng当中的一些指标 如温度活性范围、形状、载体、组分等等查看更多
简介
职业:福建申远新材料有限公司 - 设备维修
学校:延安大学 - 化学与化工学院
地区:台湾省
个人简介:良好的健康状况和高度的身体训练,是有效的脑力劳动的重要条件。查看更多
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