单项选择题
A.visibility B.winds C.sea D.fog
Little or no change in the barometric reading over a tw...
单项选择题Little or no change in the barometric reading over a twelve hour period indicates（）.
A.stormy weather is imminent B.that present weather conditions will continue C.a defect in the barometer D.increasing wind strength
In the relatively calm area near the hurricane center，t...
单项选择题In the relatively calm area near the hurricane center，the seas are（）.
A.moderate but easily navigated B.calm C.mountainous and confused D.mountainous but fairly regular as far as direction is concerned
In the doldrums you will NOT have（）.A.high relative hum...
单项选择题In the doldrums you will NOT have（）.
A.high relative humidity B.frequent showers and thunderstorms C.steep pressure gradients D.frequent calms
