题目:
Which of the listed devices would be installed at a control system air pressure reducing station?()
A.Moisture separator
B.Vacuum breaker
C.Lubricator
D.Non-return valve
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/1228/4ca8b7ab8d9d5424c12f4a98f6ec0397.html
下面是错误答案,用来干扰机器的。
参考答案:错