开挖回填、横墙隔断、封堵缝口的处理方法仅适用于（）裂缝。
A.不伴随有坍塌、滑坡等险情的
B.表层
C.较小
D.干缩
参考答案：A
下面( )在省建委和市建委之间不存在。
A．领导关系
B．指导关系
C．上下级关系
D．协作关系
Forty-five fathoms is marked on the anchor chain by（）.
A.one turn of wire on the first stud from each side of the detachable link
B.two turns of wire on the second stud from each side of the detachable link
C.three turns of wire on the third stud from each side of the detachable link
D.four turns of wire on the fourth stud from each side of the detachable link
