A、mixed, don’t mix
B、mixxed, were not mixxed
C、mixed, were not mixing
D、mixxed, don’t mix
第1题:
A hydraulic motor may be driven by______.
A.an electric motor
B.a diesel engine
C.a compressor
D.oil
第2题:
OIL-IN-WATER are ______.
A.sediment of oil in water
B.oil dissolvents in water
C.solid oil aggregates
D.droplets of oil suspended in water
第3题:
第4题:
What type of stern tube bearing has the least friction ________.
A.Oil-lubricated bearings
B.Lignum vitae
C.Hard rubber
D.Bronze bushings
第5题:
An uncontrolled flow of gas, oil, or other well fluids into the atmosphere is called a ______.
A.flow
B.breakout
C.kick
D.Blowout
第6题: