盐膏层结晶盐的溶解、泥页岩的水敏性，都会导致井壁不稳定。
参考答案：对
His report was so exciting that it was _______ interrupted by applause. [ ]
A. constant
B. constantly
C. seldom
D. never
质押贷款逾期超过（），建设银行有权依法处理质押的存单和凭证式国债
A．1周
B．半个月
C．1个月
D．3个月
