The speed of the camshaft in a two-stroke/cycle diesel engine, running at 950 RPM, is （）.

[单选题]The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the （）.A . control rackB . delivery valveC . governor speedD . plunger crossbar

[单选题]（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A . The driven gearB . The driveC . The greaseD . The lubricating oil

[单选题]当出现“SPEED，SPEED，SPEED”的语音警告时表示：（）A .速度超限B .当前推力不足以通过俯仰操纵来恢复正常飞行C .速度偏离选择或管理的速度

[单选题]The camshaft on a four-stroke/cycle diesel engine provides a means to operate the （）.A . fuel injectorsB . exhaust valvesC . intake valvesD . all of the above

[单选题]In a four-stroke engines the camshaft rotates at （）.A . half the engine rotational speedB . twice the engine rotational speedC . the engine rotational speedD . four times the engine rotational speed

[单选题]In a four-stroke engine the camshaft rotates at （）.A . half the engine speedB . twice the engine speedC . the engine speedD . four times the engine speed

[单选题]Propeller pitch speed minus ship speed divided by the propeller pitch speed is termedA．apparent slipB．true slipC．pitchD．propulsive efficiency

[单选题]Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed ___.A．apparent slipB．true slipC．pitchD．propulsive efficiency

[单选题]What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?（）A . 375 RPMB . 500 RPMC . 750 RPMD . 1500 RPM

[单选题]The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.A．stoppingB．being stoppedC．to stopD．to be stopped