一段易风化、裂隙和节理发育、坡面不平整的岩石挖方边坡采用喷射混凝土防护,除此之外还可采用哪一种效果较好的防护工程( )。
A.抹面
B.捶面
C.护面墙
D.喷浆
参考答案:D
-It shouldn't take long to clear up after the party if we all volunteer to help.
-That's right_________.
A. Many hands make light work
B. Something is better than nothing
C. The more the merrier
D. The sooner begun, the sooner done
桃果实的硬核主要是由()组成。
A.导管
B.纤维
C.石细胞
D.周皮