A.a change-over chest
B.a head tank
C.a emergency bilge pump
D.an air cooler
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A.the hunting gear
B.the rudder stock
C.the rudder controller
D.the feedback unit
A.the control rod
B.the hunting gear
C.the floating ring
D.the tiller arm
A.air cooler
B.economizer
C.injector
D.air blower
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
最新試題
The major source of chemical contaminants in hydraulic fluid is （）.
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 （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
Thermostatic expansion valves can be adjusted for （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
A pressure drop through the refrigerant liquid line may cause （）.
The general purpose of a heat exchanger is to （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
Which of the listed pumps is NOT a positive displacement pump?（）
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.