單項選擇題My ETA（）Cheng Shan Tou lighthouse is 0900 hours local time.
A.of
B.in
C.on
D.at
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1.單項選擇題What（）your registry port, over.
A.are
B.is
C.were
D.was
2.單項選擇題After transferring a weight forward on a vessel，the draft at the center of flotation will（）.
A.change，depending on the location of the LCG
B.increase
C.decrease
D.remain constant
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Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
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Bales close to the deckhead should be covered to prevent（）.
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Which of the following shall not the officers in charge of the navigational watch do?（）
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The helm command PORT TWENTY means（）.
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