单选题 _______ in the Northern Hemisphere flow clockwise around highs and counterclockwise around lows. 北半球的风沿高方向顺时针流动，沿低方向逆时针流动。
相关试题
单选题 An aircraft at 3,000ft AGL and 69 miles from a specific VHF ground station may improve reception by _________．
单选题 The country indicator指示器 of civil aircraft for the People’s Republic of China is________.
单选题 The horizontal range for large scale规模 weather is about _________ .
单选题 In radiotelephony, the call sign for a controller in area control center is _________ ．
单选题 When the controller asks the pilot to “stand by”, he means _________．
单选题 In radiotelephony, the call sign for a controller of aerodrome control service is__________．
单选题 ICAO adopted a phonetic alphabet to be used in radio transmissions in order to _________ ．
单选题 Jet stream region is an area where the wind speed is greater than _________ m/s.
