A qualified deck officer should be（）th

1、Every deck officer should be able eff

Every deck officer should be able efficiently carry out：（）AA、ConningBB、Navigation/Collision AvoidanceCC、AdministrationDD、Above of all

2、In launching a lifeboat，when should th

In launching a lifeboat，when should the tricing pendants be released?（）.ABefore the boat is lowered from the stowage positionBAs soon as the ...

3、During the deck repair,（） should be me

During the deck repair,（） should be measured firstly before tail shaft is drawn out.Athe sinking of tail shaftBthe clearance of stern bearingCthe total flexure of both end bearingDmain engine crankshaft deflectio

4、The helicopter deck of a ship must be

The helicopter deck of a ship must be marked with the units identification，appropriate aiming circles，and a continuous line on the perimeter which is（）.A8 inches wideB16 inches wideC24 inches wideD32 inches wide

5、：Keys should never be hidden around th

：Keys should never be hidden around the house since thieves（ ）know where to find them．AvirtuallyBunavoidablyCreliablyDinvariably

6、Vessels should be manned（）duly qualifi

Vessels should be manned（）duly qualified officers and crew adequate（）ensure the safety of navigation.Aby/toBwith/toCwith/forDfrom/for