On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?（）

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.A . a spindle lubricatorB . an oil jetC . internal splashingD . drilled passages in the crankshaft

[单选题]Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.A . leadB . forged steelC . alloy steelD . aluminum alloy

[单选题]Crankshafts of medium speed engines are （） from a single piece of steel.A . unusually solid weldedB . never be solid forgedC . almost invariably solid forgedD . almost invariably be welded

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).A．a spindle lubricatorB．an oil jetC．internal splashingD．drilled passages in the crankshaft

[单选题]The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.A . two-strokeB . four-stokeC . long-strokeD . short-stroke

[单选题]Most medium and slow speed diesels are started by what medium?（）A . Electric starting motorsB . HydraulicsC . Compressed airD . Ether

[单选题]As to the low speed diesel engine, if you want to change the coolant flow for a certain cylinder, you can regulate （）.A . the inlet valveB . the outlet valveC . both the inlet valve and the outlet valveD . the pump inlet valve

[问答题] 涡轮增压活塞式（turbo-charged-reciprocating）发动机的油门开关控制什么？

[单选题]Freight rates are mostly charged（）.A . by the weight (tons) of cargoB . by the capacity (tons) of vesselC . by DW of the vesselD . by the draft of the vessel

[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