Gear-type flexible couplings are often used in diesel engine drive trains because they()

A . require no lubrication under normal operating conditions B . compensate for gross misalignment in the drive train C . are able to transmit high torque ,even where slight misalignment exists D . will rapidly disconnect the engine from the line shaft

时间:2022-10-04 05:26:46 所属题库:船舶电气与船舶安全题库

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