大工《大学英语3》21春在线测试1参考答案1.Mr.Green left () suddenly () he came.A.so; that B.so; as C.as; that D.as; as答案：D2.It was not until liberation that () to his hometown.A.did he return B.was he returned C.he did return D.he returned答案：D3.-I'd like a pen whi
大连理工大学20春《测量学》在线作业2答案1.由自动安平水准仪的构造可知，当圆水准器气泡居中时，便可达到()。A.望远镜视准轴水平 B.获取望远镜视准轴水平时的读数 C.通过补偿器使望远镜视准轴水平 D.以上均不对答案：B2.应用水准仪时，使水准管气泡居中的作用是()。A.竖轴铅直 B.粗略水平 C.视线竖直 D.视线水平答案：D3.若水准尺上一次观测的中误差为±1.0mm，则采用两次仪器高法测得的每站高差中误差为()。A. ±4.0mm B. ±2.0mm C. ±1.0mm D.