單項選擇題

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

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單項選擇題

Keel coolers fouled with marine growth, will result in （）

A.higher raw water temperatures
B.higher jacket water temperatures
C.a malfunctioning thermostat
D.higher fuel temperature

單項選擇題

The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the （）

A.camshaft
B.crankshaft
C.governor
D.flywheel