A.an oily water separator
B.a purifier
C.a centrifugal compressor
D.a clarifier
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A.air
B.black oil
C.water
D.ice cream
A.rather than
B.other than
C.in addition that
D.except for
A.ballast water
B.boiler water
C.bilge water
D.sewage water
A.Boiler
B.Incinerator
C.Oily water separator
D.Sewage treatment unit
A.many thousand times larger than
B.the same as
C.many thousand times smaller
D.none of the above
最新試題
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
Thermostatic expansion valves can be adjusted for （）.
Which of the listed pumps is NOT a positive displacement pump?（）
The usual symptoms of cavitation in a centrifugal pump is （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
Low compressor head pressure in a refrigeration system can be caused by（）.