Senior members of the staff competed e

1、In four strokes engine, the cycle of e

In four strokes engine, the cycle of events is completed in four strokes of （）.Athe cylinderBthe crankshaftCthe pistonDthe cross-head

2、The structural members of the hull ext

The structural members of the hull extending in a fore and aft direction are called （）.AframesBjoinersClongitudinalsDknee

3、All member of the engineering watch s

All member of the engineering watch shall be familiar with assigned watch-keeping dutiesIn addition, every member shall, with respect to the shi...

4、0ne of the limitations of foam as an e

0ne of the limitations of foam as an extinguishing agent is that foam（）.Acannot be made with salt waterBis heavierthan oil and sinks below its surfaceCis corrosive and to fire fightersDconducts electricity

5、One of the limitations of foam as an e

One of the limitations of foam as an extinguishing agent is that foam（）.Acannot be made with salt waterBis heavier than oil and sinks below its surfaceCis corrosive and a hazard to fire fightersDconducts electricity

6、The citizenship of a crew member of a

The citizenship of a crew member of a vessel is determined solely by the （）.ACustoms OfficerBImmigration OfficerCCoast GuardDUnion Official