【简答题】I had hardly got to Amsterdam when it began to snow.
【判断题】经纬仪对中的目的是使仪器的水平度盘中心与测站点位于同一铅垂线上。
【判断题】气相色谱微量注射器使用前要先用HCl洗净()
【简答题】We had hardly run into the classroom when it began to rain. 改写成: Hardly ___________, when it began to rain.
【单选题】腹腔内实质性脏器损伤最可靠的诊断依据是()。
【单选题】How happy they are! Obviously, they are ______.
【判断题】经纬仪对中的目的是使仪器的水平度盘中心与测站点位于同一铅垂线上。