坝基渗流压力观测一般与浸润线同时进行,但在水位每上涨1m,下降()时增测一次,以掌握渗流压力随着库水位变化的相应关系。
A.0.5m
B.1m
C.0.1m
D.1.5m
参考答案:A
—Peter, I haven't seen you for a long time.
—Oh, I _______ a book these days. [ ]
A. am writing
B. have written
C. wrote
早接库包或尾箱时()
A、运钞车到达前,营业网点拉(卷)闸门应处于关闭状态或半关闭
B、接收库包应在监控范围内进行
C、库包或尾箱交接期间,大厅内不得有无关人员滞留
D、保安员不得接触库箱、库包