A.high pressure liquid line
B.low pressure liquid line
C.high pressure vapor line
D.low pressure vapor line
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A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed
A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed
A.Dissipate heat
B.Trap foreign matter
C.Separate air from the oil
D.All of the above
A.Dissipate heat
B.Trap foreign matter
C.Separate air from the oil
D.All of the above
A.Proper refrigerant charge
B.Faulty expansion valve
C.Insufficient refrigerant
D.Solenoid valve stuck open
最新試題
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
The major source of chemical contaminants in hydraulic fluid is （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
When the steering gear is in operation, you should （）.
A salinity indicator is used to determine the （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.