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
The major source of chemical contaminants in hydraulic fluid is （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
A salinity indicator is used to determine the （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
Thermostatic expansion valves can be adjusted for （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）