（）作为钢筋强度的设计依据。
A.抗拉强度
B.屈服强度
C.线应变
D.延伸率
参考答案：B
He decided that he would drive all the way home instead of _____ at a hotel for the night. [ ]
A. putting down
B. putting off
C. putting on
D. putting up
层积催芽对种子发芽都有哪些作用？
