A.Cranes
B.Mooring winches
C.Windlasses
D.Foreman
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A.stop valves
B.check valves
C.safety valves
D.reducing valves
A.an electric motor
B.a diesel engine
C.a compressor
D.oil
A.large size of oil globule
B.low temperature
C.high viscosity
D.high flow rate
A.with dirty water
B.with clean water
C.by oily water
D.by mixed water
A.upwards
B.downwards
C.outwards
D.forwards
最新試題
A salinity indicator is used to determine the （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
The output volume of a positive fixed displacement pump can be changed only by （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
A salinity indicator is used to determine the （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
Thermostatic expansion valves can be adjusted for （）.