【单选题】支水准路线,既不是附和路线,也不是闭合路线,要求进行( )测量,才能求出高差闭合差。
【单选题】在三相平行直列导体中,发生三相对称短路时,产生的最大电动力大小为( )。
【简答题】I still remember my first day in the U.S. very clearly. My friend was waiting for me when my plane landed at Kennedy Airport at three o’clock in the afternoon. The weather was very and it was snowing,...
【判断题】支水准路线,既不是附和路线,也不是闭合路线,要求进行往返测量,才能求出高差闭合差。
【单选题】( )年陈光甫将附设在自家银行内的旅行部独立出来,正式成立了中国旅行社,该旅行社也是中国第一家旅行社。
【判断题】企业取得新产品要以自主开发为主,不宜采用购买技术的方式。
【简答题】Jim Green works in the hospital. Last weekend he _ _41_ __ go to work. On Saturday morning his father __ _42__ to him, “Jim, go to the city and to see my best friend, Mr Vickers. Here is his 43 . His ...
【单选题】( )年7月,陈光甫将附设在自己银行内的旅行部独立出来,正式成立了中国旅行社。该旅行社也是中国第一家旅行社。