水泥砂浆防水层表面应密实,不得有()缺陷.
A﹒蜂窝
B﹒露筋
C﹒裂缝
D﹒起砂
E﹒麻面

A. alike
B. different
C. typical
D. flexible

A. so
B. because
C. if
D. which

A. relevant
B. rational
C. radical
D. reverse