单项选择题
Early indications of the approach of a hurricane may be all of the following EXCEPT（）.
A.short confused swells
B.gradually increasing white clouds (mare's tails)
C.pumping barometer
D.continuous fine mist-like rain
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相关考题
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单项选择题
Cirrus clouds are composed primarily of（）.
A.ice crystals
B.water droplets
C.snow crystals
D.nitrogen -
单项选择题
An aneroid barometer reading should be corrected for differences in（）.
A.elevation
B.temperature
C.wind speed
D.latitude -
单项选择题
An anemometer on a moving vessel measures（）.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
