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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.

A、loss of suction in the circulating pump

B、leak in the primary cooling system

C、broken raw water pump shaft

D、burned or cracked piston in one cylinder

时间：2022-01-03 12:06 关键词： 船舶动力装置 海船船员考试

答案解析

B