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【单选题】
健康评估的意义有（）A.
控制和降低危险因素
B.
提高生活质量
C.
延长健康寿命
D.
以上都有
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【单选题】A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?
A.
If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets
B.
If the blue ends of the magnets are aft you should lower the fore-and-aft tray
C.
If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets
D.
If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets
【单选题】A pilot vessel on pilotage duty at night will show sidelights and a sternlight ______.
A.
when at anchor
B.
only when making way
C.
at any time when underway
D.
only when the identifying lights are not being shown
【单选题】Prior to loading barges over the stern of a LASH vessel，the vessel should be trimmed in what manner ________．
A.
Two to four feet by the bow
B.
Slightly by the bow
C.
No trim should be permitted
D.
Slightly by the stern
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