單項選擇題0ne of the principal dangers inherent in liquified petroleum gas is（）.

A.as it warms up it becomes heavier than air
B.the way it reacts with sea water
C.the strong odor it produces
D.its low temperature causes frostbite or freezing


您可能感興趣的試卷

你可能感興趣的試題

1.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

2.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

3.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

4.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

5.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