发生事故需要停泵时,停泵应按什么顺序作业?
参考答案:
应按下列顺序:打开手动卸载阀,使泵空载运行;关闭高压供液阀和泵的吸液阀;按泵的停止按钮,将控制开关手把扳到断电位置。
As a child, Jack studied in a village school, ____ is named after his grandfather. [ ]
A. which
B where
C. what
D. that
TAE-100A/30离心式压缩机的电机功率为()kW。