矩形截面小偏心受压构件破坏时的As应力一般()屈服强度,因此为节约(),可按最小配筋率及()配置As。
参考答案:达不到;钢材;构造要求
I have bought two ball pens ,______ writes well.
A.none of them
B.neither of them
C.neither of which
D.none of which
最高位在亿位的数一定是九位数.______.