单项选择题
A.Trade Winds B.Winds of the temperate zones C.Monsoons D.Land and Sea Breezes
Steady precipitation is typical of（）.A.coming cold weat...
单项选择题Steady precipitation is typical of（）.
A.coming cold weather conditions B.a warm front weather condition C.high pressure conditions D.scattered cumulus clouds
Snow has obliterated surface features and the sky is co...
单项选择题Snow has obliterated surface features and the sky is covered with uniform，altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called? （）
A.Ice blink B.Whiteout C.Water sky D.Aurora reflection
Relative humidity is the percentage of water vapor that...
单项选择题Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at（）.
A.a specific barometric pressure B.a specific temperature C.a specific wind speed D.any time
