A.operate the wheel and stand by
B.keep a lookout and operate steering gear
C.enter telegraph orders in the bell book
D.operate the telegraph and enter telegraph orders in the bell book
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A.falls/in
B.has been falling/on
C.has fallen/at
D.is falling/in
A.foam or soda acid
B.dry chemical or foam
C.carbon dioxide or dry chemical
D.carbon dioxide or foam
A.pass
B.overtake
C.catch up
D.run down
A.course
B.track
C.direction
D.trend
A.the apparatus
B.equipment
C.riggings
D.fittings
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