A.paved
B.cleaned
C.welded
D.dismantled
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A.water
B.oil
C.heat
D.steam
A.safety valve
B.blow down valve
C.scum valve
D.feed check valve
A.strainers
B.valves
C.elements
D.separators
A.in series
B.in parallel
C.assembled
D.together
A.gasket
B.packing
C.washer
D.spring
最新試題
A pressure drop through the refrigerant liquid line may cause （）.
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The major source of chemical contaminants in hydraulic fluid is （）.
A salinity indicator is used to determine the （）.
The general purpose of a heat exchanger is to （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
A salinity indicator is used to determine the （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.