单项选择题

A relief valve for a cargo pump is generally installed（）.

A.after the discharge valve
B.between the pump and discharge valve
C.after the suction valve
D.between the pump and suction valve

点击查看答案&解析

上一题目录下一题

单项选择题

A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector

单项选择题

A.cooling the gas below the ignition point
B.cutting off the supply of oxygen
C.stopping the flow of gas
D.interrupting the chain reaction

单项选择题

A.odor
B.color
C.pressure
D.density