单项选择题
（）LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W.
A.SHLW
B.SCTD
C.OBS
D.SW
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相关考题
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单项选择题
The Routing System which aimed at reducing the risk of casualties is called as（）.
A.Traffic Separation Schemes
B.Recommended tracks
C.Precautionary areas
D.Inshore traffic zones -
单项选择题
When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as（）.
A.Hurricane
B.Breeze
C.Storm
D.Gale
