A.an electric motor
B.a diesel engine
C.a compressor
D.oil
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A.large size of oil globule
B.low temperature
C.high viscosity
D.high flow rate
A.with dirty water
B.with clean water
C.by oily water
D.by mixed water
A.upwards
B.downwards
C.outwards
D.forwards
A.bowl periphery
B.bowl center
C.upper surface
D.lower surface
A.bowl periphery
B.bowl center
C.upper surface
D.lower surface
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