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【单选题】

After being launched from a vessel,totally enclosed survival craft which have been afloat over a long period require().

A、frequent opening of hatches to permit entry of fresh air

B、regular checks of bilge levels

C、use of ear plugs to dampen engine noise

D、frequent flushing of the water spray system with fresh water

更多“After being launched from a vessel,totally enclosed survival craft which have been afloat over a long period require().”相关的问题
第1题

A、Before the boat is lowered from the stowage position  B、As soon as the boat-fall blocks clear the davit head  C、After the limit switch is activated  D、After all people have been embarked  

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第2题

A、Before the boat is lowerd from the stowage position  B、As soon as the boat-fall blocks clear the davit head  C、After the limit switch is activated  D、After all people have been embarked  

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第3题

A、Opening the automatic drain plugs  B、Draining the water pockets  C、Using the electric bilge pump  D、Using the bailers and cellulose sponge  

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第4题

A、Each lifeboat must have a launching appliance  B、Launching appliances must be of the gravity type  C、There may not be more than two launching appliances on the same deck  D、All of the above  

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第5题

A、A.opening the automatic drain plugs  B、B.draining the water pockets  C、C.using the electric bilge pump  D、D.using the bailers and cellulose sponge  

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第6题

A、to look after  B、to be looked after  C、being looked after  D、looking after  

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第8题

A、before the boat is lowered from the stowed position  B、as the boat-fall blocks break clear of the davit head  C、before the boat is lowered from the embarkation level  D、after the boat is released into the water  

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第9题

A、before the boat is lowered from the stowed position  B、as the boat fall blocks break clear of the davit head  C、before the boat is lowered from the embarkation level  D、after the boat is released into the water  

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第10题

A、before the boat is lowered from the stowed position  B、as the boat fall blocks break clear of the davit head  C、before the boat is lowered from the embarkation level  D、after the boat is released into the water  

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