單項(xiàng)選擇題

A line of clouds，sharp changes in wind direction，and squalls are most frequently associated with a(n)（）.

A.occluded front
B.warm front
C.cold front
D.warm sector

你可能感興趣的試題

單項(xiàng)選擇題

A hygrometer is a device used for determining（）.

A.the absolute temperature
B.atmospheric pressure
C.wind velocity
D.relative humidity

單項(xiàng)選擇題

A generally circular low pressure area is called a(n)（）.

A.cyclone
B.anticyclone
C.cold front
D.occluded front