单项选择题

Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.

A.cargo pump failure
B.blower failure
C.deck seal low water level
D.low inert gas temperature

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单项选择题
During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.

A.150 millimeters of water pressure
B.125 millimeters of water pressure
C.100 millimeters of water pressure
D.75 millimeters of water pressure
单项选择题
After making the required notification that a large oil spill into the water has occurred，the FIRST action should be to（）.

A.apply straw or sawdust on the oil
B.contain the spread of the oil
C.throw grains of sand into the oil
D.have the vessel move out of the spill area
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