引进浅冷装置虽然天然气压缩机在运行,但系统操作情况不正常,()故障是原因之一。
A.氨循环回路低压开关
B.缺油或油气压差开关
C.回路中带液过载
D.电磁阀工作不正常
参考答案:B
— What do you think of our school, Thomas?
— Terrific! It is a school _______ everybody tries his best to improve himself and keep up with others.
A.which
B.when
C.that
D.where
以下错误的IP地址()
A.10.10.128.1
B.202.96.96.18
C.202.96.122.18
D.202.96.122.258