單項選擇題0pen ullage holes in tanks which are not gas-free must be protected by（）.

A.PV valves
B.warning signs
C.flame screens
D.stop-check valves


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1.單項選擇題0ur starboard derrick boom of hatch No.4 is baddly cracked（）that it has become entirely useless.

A.at its goose neck to such a extent
B.at it's goose neck to such an extent
C.at it's goose neck for such a extent
D.at its goose neck to such an extent

2.單項選擇題0vercarring is best prevented by（）.

A.assuring heavy cargo is stowed low in the vessel
B.checking the vessel's load line calculations carefully
C.inspection of the hold at completion of discharge
D.stowing the cargo which is to be discharge last on the bottom

3.單項選擇題Paints and solvents on a vessel should be（）.

A.stored safely at the work site until work is completed
B.returned to the paint locker after each use
C.covered at all times to protect from ignition sources
D.stored in a suitable gear locker

4.單項選擇題Panting frames are located in the（）.

A.after double bottoms
B.centerline tanks so tankships
C.fore and after peaks
D.forward double bottoms

5.單項選擇題Pinching of the cargo hose between the vessel and the dock should be prevented by（）.

A.adjusting the hose supports
B.laying out an excess length of hose on deck
C.tying off the topping lifts and runners to winch heads
D.All of the above