單項(xiàng)選擇題One function provided by a hydraulic accumulator is to()

A.provide an area where air can separate from the oil
B.provide an area to separate solid contaminants from the oil
C.act as an oil and water separator
D.absorb shocks occurring in the system


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oilAnother function is to()

A.act as a shock absorber
B.maintain the stored oil under pressure
C.act as a base or foundation for the power unit
D.eliminate pressure surges in the system

2.單項(xiàng)選擇題To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should ()

A.admit only enough fresh outside air to provide proper ventilation
B.reduce the air reheating system load
C.lower the compressor head pressure
D.operate the purge recovery unit continuously

3.單項(xiàng)選擇題When air is at its dew point it is at its()

A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity

4.單項(xiàng)選擇題If you find an extremely large refrigerant leak while using a halide torch, your flame will()

A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue

5.單項(xiàng)選擇題Before charging a refrigeration unit, the refrigerant charging lines should be()

A.flushed with clean refrigerant oil
B.purged with the refrigerant
C.washed with an ammonia and alcohol solution
D.grounded to compressor

最新試題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

題型:?jiǎn)雾?xiàng)選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:?jiǎn)雾?xiàng)選擇題

The main purpose of port State control is not to()

題型:?jiǎn)雾?xiàng)選擇題

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

題型:?jiǎn)雾?xiàng)選擇題

Cold weather starting of a diesel engine may be made easier by()

題型:?jiǎn)雾?xiàng)選擇題

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

題型:?jiǎn)雾?xiàng)選擇題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

題型:?jiǎn)雾?xiàng)選擇題

Which of the following items don’t belong to dock repair works?()

題型:?jiǎn)雾?xiàng)選擇題

The condensers located in various stages of a flash evaporator are cooled by()

題型:?jiǎn)雾?xiàng)選擇題

If separating effect is not good, which measure should be taken ()

題型:?jiǎn)雾?xiàng)選擇題