【单选题】在局域网中,普通PC机入网时必需在该机器内安装____。
【单选题】Snowden arrived at Sheremetyevo International airport on June 23, _____ he was prevented from leaving for six weeks after the U.S. canceled his passport.
【判断题】乒乓球是我国的国球,但是现代乒乓球运动并不是起源于中国
【单选题】在新中国的外交史上,用“小球推动大球”是指( )。
C.
用“乒乓外交”打开中日两国人民友好交往的大门
D.
用“乒乓外交”打开中美两国人民友好交往的大门
【单选题】____ to sunlight for too much time will do harm to one s skin. [ ]
【简答题】____是公务电话的核心,它实质上是一部由计算机软件控制的数字通信交换机,按用途可分为市话、长话和用户交换机。
【单选题】The motorbike is out of______and hit a tree by road.