A.bowl periphery
B.bowl center
C.upper surface
D.lower surface
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A.purifying
B.batch
C.long period
D.temporary
A.center
B.periphery
C.inlet
D.upper parts
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
A.air
B.black oil
C.water
D.ice cream
最新試題
A pressure drop through the refrigerant liquid line may cause （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
The output volume of a positive fixed displacement pump can be changed only by （）.
The major source of chemical contaminants in hydraulic fluid is （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
When the steering gear is in operation, you should （）.
Thermostatic expansion valves can be adjusted for （）.