单项选择题
A.ice crystals B.water droplets C.snow crystals D.nitrogen
An aneroid barometer reading should be corrected for di...
单项选择题An aneroid barometer reading should be corrected for differences in（）.
A.elevation B.temperature C.wind speed D.latitude
An anemometer on a moving vessel measures（）.A.apparent ...
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
Altocumulus clouds are defined as（）.A.high cloudsB.midd...
单项选择题Altocumulus clouds are defined as（）.
A.high clouds B.middle clouds C.low clouds D.vertical development clouds
