题目内容 (请给出正确答案)
[主观题]

Personnel who are moving or handling material aboard ship should NOT follow which of the l

isted practices?

A.Signaling that all personnel are clear before lifting or lowering material

B.Examining material for sharp edges or protruding points before handling

C.Closing, tagging or securing valves that permit entrance of steam, water, or air into a fitting or other equipment

D.Throwing materials from high places to the deck

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第1题

The class of fire on which a blanketing effect is essential to extinguish the fire is

A.Class 'A'

B.Class 'B'

C.Class 'C'

D.Class 'D'

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第2题

Fire dampers prevent the fire spreading through the process of

A.convection

B.conduction

C.radiation

D.direct contact

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第3题

Portable carbon dioxide fire extinguishers should be sent ashore to be recharged

A.when the remaining charge volume is less than 90 percent of the required volume

B.at each inspection for certification

C.at each annual inspection

D.when the weight loss exceeds 10% of weight of charge

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第4题

While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?

A.Make an entry in the official logbook

B.Open the master control valves on the fixed CO2 system

C.Start the fire pump and check discharge pressure

D.Secure auxiliary condenser overboard discharge

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