A.a line
B.a circle
C.a helix
D.an epllicate
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A.dependent
B.in dependent
C.in series
D.in parallel
A.one-third
B.two-thirds
C.one-fourth
D.two-fourths
A.Classification Society Rules
B.National requirements
C.The IMO International Convention for the Safety of Life at Sea
D.All of the above
A.low pressure at all times
B.full pressure at all times
C.low pressure at intermittence
D.full pressure at intermittence
A.an auxiliary reservoir
B.a controlling air bottle
C.an emergency air compressor
D.a main air compressor
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During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
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