Water is a very effective fire extinguishing agent because it（）

A、will remove all the toxic fumes from the air

B、has the greatest cooling ability

C、will leave no harmful residue

D、completely removes combustible vapors from the air

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更多“Water is a very effective fire extinguishing agent because it（）”相关的问题

第1题

[单选题] The separating effect of oil separator is not very good, the reason may be（）

A、too little seal water B、improper gravity disc C、oil discharging pump not working very well D、low water level of the working water

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第2题

[] Oil pressure in the lubrication system is（）than the static sea water head to ensure that sea water cannot enter the sterntube in the event of seal failure.

A、A.higher B、B.lower C、C.very higher D、D.very lower

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第3题

[] The easiest way to anchor a vessel in a current is to（）.

A、A.stem the current and make very slow headway when the anchor is dropped B、B.stem the current and be falling aft very slowly when the anchor is dropped C、C.stem the current and endeavor to make neither headway nor sternway when the anchor is dropped D、D.stop all headway through the water and keep the current astern when the anchor is dropped

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第4题

[单选题] A very light breeze that causes ripples on a small area of still water is a（）.

A、cat's paw B、hog's breath C、williwaw D、chinook

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第5题

[单选题] The meaning of ebb tide is that （）.

A、tide is falling from high water to low water B、tide is rising from low water to high water C、tide is reaching to a highest level D、tide is reaching to a lowest level

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第6题

[单选题] The meaning of ebb tide is that（）.

A、tide is falling from high water to low water B、tide is rising from low water to high water C、tide is reaching to a highest level D、tide is reaching to a lowest level