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（请给出正确答案）
A.catch plates
B.dampers
C.regulating valves
D.fans
答案
B、dampers
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A.a qualified officer or officers, and ratings
B.a master and ratings
C.a master and a duly qualified officer
D.a master, a duly qualified officer and ratings when appropriate
第2题
A.①②
B.②③
C.①②③
D.①～④
第3题
A.]. helloworld
B.]. hello$temp
C.]. hello world
D.[C]. hello
第4题
Brazilian coffee is usually()by ships because this way is cheaper.
A. transported
B. transmitted
C. transferred
D. traded
第5题
A.warships
B.merchant ships
C.ships engaged in coastal voyages
D.ships engaged in international voyages
第6题
A.means
B.roads
C.ships
第9题
A.the ships hands
B.the ships officers
C.the foreman from the shore
D.the tally man
