單項(xiàng)選擇題Weather forecast messages are usually().

A.Given only to TV stations
B.Transmitted only by commercial broadcast stations
C.Broadcast in plain language
D.Broadcast immediately on VHF Channel 16 and 2182 kHz


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1.單項(xiàng)選擇題Weather conditions in the middle latitudes generally move().

A.Eastward
B.Westward
C.Northward
D.Southward

3.單項(xiàng)選擇題The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the().

A.Wall cloud
B.Nimbostratus cloud
C.Bar
D.Funnel

4.單項(xiàng)選擇題The dense black cumulonimbus clouds surrounding the eye of a hurricane are called().

A.Spiral rainbands
B.Cloud walls
C.Funnel clouds
D.Cyclonic spirals

5.單項(xiàng)選擇題The Beaufort scale is used to estimate the().

A.Wind direction
B.Percentage of cloud cover
C.Wind speed
D.Barometric pressure