单项选择题
The deck water seal of the inert gas system（）.
A.cools the inert gas and prevents soot from entering the cargo tanks
B.acts as an emergency system shutdown when the inlet pressures exceed the safe working pressure in the hazardous zone
C.prevents the backflow of hydrocarbon gasses into nonhazardous areas
D.relieves sudden large overpressures in the system
相关考题
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单项选择题
The color of the signal flare sent up by a submarine about to surface due to an emergency condition within the submarine is（）.
A.green
B.red
C.white
D.yellow -
单项选择题
The approval period for a shipboard Oil Pollution Emergency Plan expires after（）.
A.two years
B.three years
C.four years
D.five years -
单项选择题
Shipboard Oil Pollution Emergency Plans must be reviewed（）.
A.annually by the owner，with a letter submitted six months before expiration
B.only once every five years，with a letter submitted six months before expiration
C.and the entire plan resubmitted for approval once every five years，six months before expiration
D.annually by the owner，with a letter submitted to the Coast Guard within one month of the anniversary date of the plan approval
