什么叫水准测量?
参考答案:
用水准仪和水准尺测定两固定点间高差的工作。
35. She is __________ being pleased about it; she is very angry.
A.frequent
B.quite
C.far from
D.Rather
执勤消防人员必须按规定着装登车,情况紧急时,方可乘坐在车厢外部或顶部。