下面哪一项不符合基础的基本要求:()。
A.可以超挖回填虚土
B.不得出现露筋和空洞现象
C.基础的地基承载力必须满足设计要求
参考答案:A
Jimmy looks sad because he _________ to the dance party. [ ]
A. didn't invite
B. wasn't invited
C. hasn't invited
D. isn't invited
如果a×b=1,那么( )
A.a是倒数
B.b是倒数
C.a和b都是倒数
D.a和b互为倒数