The principal purpose of adjustment of

1、0ne of the principal dangers inherent

0ne of the principal dangers inherent in liquified petroleum gas is（）.Aas it warms up it becomes heavier than airBthe way it reacts with sea waterCthe strong odor it producesDits low temperature causes frostbite or freezing

2、THE SPEED OF A VESSEL ADJUSTED TO THAT

THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.AGround speedBBoarding speedCRelative speedDSpeed of the vessel

3、Which of the following adjustments is

Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?（）Aspeed droopBcompensationCidle speed settingDload limit control

4、The purpose of the flywheel of a diese

The purpose of the flywheel of a diesel engine is to （）.Acounterbalance the crank throws on the crankshaftBkeep the engine running smoothly b...

5、The purpose of the compensating adjust

The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to （）Acompensate for low oil levelBincrease governor promptnessCprevent governor huntingDlimit engine load

6、The purpose of PSC is （）

The purpose of PSC is （）Ato check and inspect foreign shipsBto verify the condition of a ship in compliance with requirements of international conventionsCto fine shipsDto detain shi