When the density of water is 1000,i.e.

1、When the dock is refilled with water a

When the dock is refilled with water after docking repair, the first work which should be done by engineers is （）Aigniting boilerBreleasing air in sea water systemCstarting generatorDcut off shore power

2、If water is rising in the bilge of a l

If water is rising in the bilge of a lifeboat，you should FIRST（）.Aabandon the survival craftBcheck for cracks in the hullCshift all personnel to the sternDcheck the bilge drain plug

3、Fresh water is used for the cooling of

Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.Acylinder coversBlubricating spaceCcrossheadDexhaust manifold

4、When the diesel is stopped, which of t

When the diesel is stopped, which of the following items is wrong?（）Akeep all systems in normally runningBthe main engine is stand-byCshut off the starting air bottle outlet valveDpay attention to the changes of the system parameter

5、When a boiler is operating, the water

When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.Alower thanBhigher thanCas much asDthe same a

6、If water is found in the crankcase of

If water is found in the crankcase of a diesel engine, the cause may be due to（）Aa cracked cylinder headBa leaky cylinder head gasketCa cracked cylinder linerDany of the above