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单选题
Repair of vital machinery and services on a ship should be accomplished（）.
A
after control of fire，flooding，and structural repairs
B
immediately
C
after control of fire，but before control of flooding
D
after stability is restored
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单选题机舱人员应启动机舱里的消防泵。（）A
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单选题The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）A
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immediatelyC
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单选题Where foam extinguishing systems are provided on a ship，each machinery flat in the protected space must have a(n)（）.A
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