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【单选题】
在常压下,海水的凝固点一般( )。A.
等于0℃
B.
高于0℃
C.
低于0℃
D.
无法确定
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举一反三
【单选题】The bilge main is arranged to drain any watertight compartment _____ ballast, oil or water tanks and to discharge the contents overboard.
A.
rather than
B.
other than
C.
in addition that
D.
except for
【单选题】The amount of lubricating oil in the drain tank should be checked by ( )
A.
metering
B.
weighting
C.
sounding rod
【单选题】_____ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.
A.
A filter
B.
A centrifuge
C.
A distiller
D.
A generator
【单选题】The lubricating oil is pumped from the drain tank, very often with _____ in the suction line.
A.
a filter
B.
a strainer
C.
a magnetic filter
D.
a fine strainer
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