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
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