单选题About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）Aan engine-driven；as wellBan engine-driven；has an independent pumpCan independent；as wellDan independent；has an engine-driven pump
单选题
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
参考解析
解析：
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相关考题：
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单选题Auxiliary diesel engines can be automatically shut down as a result of （）Alow lube oil temperatureBlow lube oil pressureChigh exhaust temperatureDhigh cooling water pressure
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单选题Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by （）.Aheat conduction into the injected fuel oilBheat conduction into the water jacket wallCwater circulation through passages in the holderDfuel oil circulation through passages in the holder
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