---It rained cats and dogs this morning. I’m glad we took an umbrella.

---Yeah, we would have got wet all over if we ______.

A．haven’t

B．didn’t

C．don’t

D．hadn’t

影响梁斜截面受力性能的主要因素包括( )。

A．剪跨比和高跨比

B．箍筋和弯起钢筋的数量

C．极限状态

D．梁的形状

E．混凝土的强度等级