A.as well as
B.as long as
C.rather than
D.other than
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A.the oil content in water
B.the water content in fuel oil
C.the water level in bilge well
D.the oil level in bilge well
A.whenever
B.however
C.wherever
D.whether
A.negative displacement type
B.turbine type
C.positive displacement type
D.mixed-flow type
A.well ventilated
B.well clean
C.in good order
D.more room
A.lower
B.higher
C.the lower
D.the higher
最新試題
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Thermostatic expansion valves can be adjusted for （）.
When the steering gear is in operation, you should （）.
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The rate of heat transfer from a hot region to a cold region is affected most by the （）.
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.