單項選擇題

About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）

A.an engine-driven；as well
B.an engine-driven；has an independent pump
C.an independent；as well
D.an independent；has an engine-driven pump

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單項選擇題

The cooling system（） needs least maintenance work for in this kind of system（）

A.open；the minimum components
B.open；the high cooling efficiency
C.central；there are more coolers and a extra set of pumps
D.central；there is only one component contacts seawater

單項選擇題

An alarm device inserted between the deaerating tank and the expansion tank can notify the on-watching crew that （）

A.the expansion tank is lack of water
B.the expansion tank is over flowing
C.there is something wrong with the cooling system
D.there is something wrong with the engine

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About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）

你可能感興趣的試題

The cooling system（） needs least maintenance work for in this kind of system（）

An alarm device inserted between the deaerating tank and the expansion tank can notify the on-watching crew that （）

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久