请较一个组合词? Make the arrangement to take reactor product sample as close as possible after the feed-product heat exchanger. A good location to take the sample is from separator drum. A sample cooler and small knock-out pot are required for safety and ease of sample handling. 这句话中small knock-out 是什么意思?谢谢! 查看更多5个回答 . 4人已关注
求助一道专业试题? 在一个闭合循环的热媒回路中,热媒泵与供热设备之间的位差25m,循环回路管道阻力降总计350kPa。已知热媒在工作温度下的密度为815kg/m3,该泵工作状态下的扬程(m)是下列哪个数值? A 53 B 69 C 41 D 44 请问这道题是选B 还是D 谢谢高手指点! 查看更多15个回答 . 1人已关注