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【单项选择题】

The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

A、A.evacuate all engine room personnel

B、B.fight the fire with hand portable extinguishers

C、C.activate the main CO2 bank

D、D.stop the flow of leaking fuel oil

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第1题
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第2题
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第3题
[单选题] The present difficulties（）from our failure to deal with the problem when it first arose.

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第4题
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第5题
[单选题] When there is a fire in a large electric motor, normally the very FIRST step is to （）

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第6题
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第7题
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第8题
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第9题
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