A.backingB.going slow aheadC.going full aheadD.turningT……

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

单项选择题Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.

A.noted
B.noticed
C.notified
D.notificated