A.add fluid that is the same color as the fluid in the reservoir
B.add turbine oil because it is always a good substitute
C.add any oil that has the same viscosity as the hydraulic fluid
D.check the winch manufacturers instruction book
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A.changing the angle of the tilting plate
B.changing the speed of the pump
C.moving the slide block and rotor
D.moving the shaft trunnion block
A.oil foaming in the compressor
B.higher than normal suction and discharge pressures with a higher box temperature
C.higher than normal discharge pressure with a normal box temperature
D.the compressor to run continuously
A.check hydraulic oil levels every hour
B.check the rams for overheating
C.check for excessive oil leakage from rams
D.drain water from telemotor cylinders each watch
A.prevent the gear box from leaking
B.prevent the oil from becoming inflammable
C.make sure it has not become contaminated
D.make sure the motor bearings are lubricated
A.slightly opened
B.throttled
C.fully opened
D.halfway opened
最新試題
The rate of heat transfer from a hot region to a cold region is affected most by the ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ().
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
The output volume of a positive fixed displacement pump can be changed only 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 ().
The general purpose of a heat exchanger is to ().
A grease gun is generally used to lubricate a ().
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().