循环气压缩机干气密封系统内部密封出现故障,会触发()。
A.Ⅰ型终止
B.Ⅱ型终止
C.小型终止
D.Ⅲ型终止
参考答案:A
—David has made great progress recently.
— , and .
A.So he has; so you have
B.So he has; so have you
C.So he does; so have you
D.So has he; so have you
采取改变离心式压缩机叶轮吸入口气流角的调节方法,当气流角大于90o时,工作流量将()。
A.较大
B.较小
C.不变
D.不确定