The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.

时间：2019-04-14 03:02:52 关键词：type,is,used

The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.

A.principle

B.principal

C.cause

D.case

答案解析

A

举一反三

A charge of fresh air is drawn into the engine cylinder and then （） by the moving piston（） very high pressure.

If there is water in fuel oil the revolution of the engine will （）.

Turbocharging of marine diesel engine is achieved by two distinct methods （） termed the constant pressure and the pulse system.

In a naturally aspirated diesel engine the volume of air intake is directly related to engine （）.

The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.

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