单项选择题

The Experimental Lighthouse-buoy has no navigational si……

The Experimental Lighthouse-buoy has no navigational significance and may be removed at will.The above sentence means（）.

A.It's of no use for navigation and would be removed with notice
B.It's useful in navigation and may be removed without notice
C.It's helpless in navigation and may be removed without notice
D.It's helpful in navigation and may be removed without notice

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单项选择题The effect of wind on exposed areas of the vessel is most noticeable when（）.

A.backing
B.going slow ahead
C.going full ahead
D.turning

单项选择题The diurnal variation of pressure is most noticeable（）.

A.above the polar circles
B.in a low pressure area
C.during periods of low temperatures
D.in the doldrums

单项选择题The diurnal pressure variation is most noticeable in the（）.

A.polar regions
B.horse latitudes
C.roaring forties
D.doldrums

单项选择题The daily recurring pattern of pressure changes most noticeable in low latitudes is the （）.

A.daily lapse reading
B.diurnal variation of pressure
C.pressure tendency
D.synoptic pressure

单项选择题That BE IT KNOWN THAT MV GLUCKAULF UNDER MY COMMAND HAS A DWC OF 12，431 M T ON SUMMER LOADLINE，AND A BALE CAPACITY OF 18，439 CU.M.AND A GRAIN CAPACITY OF 19，941 CU.M.is likely to be the wording of（）.

A.Declaration of Deadweight Capacity
B.Notice of Demurrage
C.Notice of Despatch
D.Notice of Readines