單項選擇題In a weather report,Z stands for().

A.zone time
B.zulu time
C.Greenich Mean Time
D.zone standard time


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1.單項選擇題In admiralty sailing directions, bands is the word used to indicate()marking.

A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal

2.單項選擇題In admiralty sailing directions, stripes is the word used to indicate()marking.

A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal

3.單項選擇題In anchoring orders, up and down means().

A.the chain is not upright
B.the chain is tight
C.the chain is upright
D.the chain is slack

4.單項選擇題In anchoring orders, walk back the chain means().

A.pay away the chain
B.take in the chain
C.check up the chain
D.take a strain on the chain

5.單項選擇題In reading a weather map, closely spaced pressure gradient lines would indicate().

A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain