下列哪一个是商业银行()
A.中国进出口银行
B.中国银行
C.邮政储蓄机构
D.国家开发银行
参考答案:B
A check line is().
A.a safety line attached to a man working over the side
B.used to measure water depth
C.used to slow the headway of a barge
D.used to measure the overhead height of a bridge
某基坑深7m,0~30m为粉细砂,地下水位为4.0m,现拟采用井点法进行井坑降水,井深18m,渗流计算的类型为下列哪一项?()
A.潜水完整井
B.潜水非完整井
C.承压水完整井
D.承压水非完整井