The weight of liquefied petroleum gas

1、Petroleum is a result of the（）of plant

Petroleum is a result of the（）of plant or animal matter in areas which are slowly subsiding.AdepressionBdescriptionCdestructionDdepositio

2、Addition of weight above the center of

Addition of weight above the center of gravity of a vessel will always（）.Areduce initial stabilityBincrease righting momentsCincrease GMDAll of the above

3、How do you determine the weight of the

How do you determine the weight of the vessel that is supported by the ground when a vessel has run aground?（）.AThis requires extensive calc...

4、The normal color of the exhaust gas of

The normal color of the exhaust gas of the diesel will be （）Aachromatism or thin grayBthin whiteCsky-blueDblack

5、Addition of weight above the center of

Addition of weight above the center of gravity of a vessel will ALWAYS（）.Areduce initial stabilityBincrease righting momentsCincrease GMDAll of the above

6、（）indicates the weight of the vessel a

（）indicates the weight of the vessel and is,therefore,according to a well known principle of physics,equal to the weight of the water it displaces.AGross tonnageBNet tonnageCDisplacement tonnageDDeadweight tonnage