构件按最小配筋率配筋时,钢筋的代换原则为:代换前后()相等。
A.强度
B.刚度
C.数量
D.面积
参考答案:D
五(1)班15名同学收集废电池,一天共收集废电池19节,这一天平均每人收集多少节?(用带分数表示结果)
The wholesaler regulates the flow of goods by ______.
A.running level with manufacturers' production
B.holding down stock of commodities
C.keeping stock for per demand
D.adjusting the prices of goods in time