A.air cooler
B.economizer
C.injector
D.air blower
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A.to pump off
B.being pumped
C.pumping out
D.it pumping out
A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump
A.reciprocating
B.hydraulic
C.turbine
D.vane
A.a level controller
B.a temperature switch
C.a pressure switch
D.a floating ball
A.a hoisting motor
B.a luffing motor
C.a mooring motor
D.a slewing motor
最新試題
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
A salinity indicator is used to determine the ().
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
One cause of high head pressure occurring in a refrigeration system can be ().
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
Low compressor head pressure in a refrigeration system can be caused by().
Which of the following statements is correct concerning heat transfer?()
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
The output volume of a positive fixed displacement pump can be changed only by ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().