Were there _____ sharks? [ ]
A. some
B. any
C. a lot
D. much
答案:B
图标中,设计号是指图纸的编号。()
常见的边坡变形破坏类型有()。
A.松弛张裂
B.蠕动变形
C.崩塌
D.滑坡
E.沉陷