单项选择题
If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
A.stop the flow of oil at the main deck manifold
B.prevent the oil from leaving the shore facility
C.prevent the oil from siphoning through the pump
D.None of the above
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相关考题
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单项选择题
How should you signal the crane operator to stop in an emergency?（）
A.Extend arm with the palm down and hold this position rigidly
B.Place clasped hands in front of your body
C.Extend arm and move hand rapidly right and left with the palm down
D.Place both fists in front of the body with the thumbs pointing outward -
单项选择题
Fire protection regulations for towing vessels require that drills be conducted on board the vessel as if there were an actual emergency. Drills include all of the following，EXCEPT（）.
A.testing all alarm and detection systems
B.breaking out and using the vessel's emergency equipment
C.participation by selected crew members
D.one person putting on protective clothing，if the vessel is so equipped -
单项选择题
Each emergency generator on a mobile offshore drilling unit，when tested，must be run under a full load for at least（）.
A.one hour
B.two hours
C.ten hours
D.four hours
