出现滑坡裂缝时,可清除堤顶或堤坡上的附加荷载,以()。
A.减小滑动力
B.增大阻滑力
C.清理场地
D.准备抢险
参考答案:A
With the final examination ______, we are busy going over what we’ve learnt this term.
A.is approaching
B.has approached
C.approached
D.approaching
耳硬化病理特征是()
A.中耳炎症
B.内耳炎症
C.内耳血管病变
D.迷路骨囊内有骨海绵状变
E.鼓室硬化症