A.every oil tanker
B.every ship of 400 tons gross tonnage and above
C.A and B
D.Neither A nor B
您可能感興趣的試卷
你可能感興趣的試題
A.Non automatic discharge overboard of machinery space bilge water
B.Automatic discharge overboard of machinery space bilge water
C.A and B
D.Neither A nor B
A.open
B.close
C.remain in its position
D.flood the evaporator with refrigerant
A.low water level
B.low oil pressure
C.excessively high fuel pressure
D.an improper air/fuel ratio
A.Condenser leakage
B.A shortage of liquid refrigerant
C.Excessive frost on the evaporator
D.Not enough condenser cooling water
A.high discharge pressure
B.frosting of the crankcase
C.high temperature of the overboard water
D.low suction pressure of compressor
最新試題
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
Which of the following statements is correct concerning heat transfer?（）
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
The major source of chemical contaminants in hydraulic fluid is （）.