4.某框架梁集中标注2φ20+(2φ12),表示( )。
A. 框架梁上部有4根通长筋,2根20,2根12;
B. 框架梁上部有4根纵筋,2φ20为通长筋,2φ12为架立筋;
C. 框架梁上部有4根纵筋,2φ20为通长筋,2φ12为支座负筋;
D. 框架梁下部有4根通长筋,2根20,2根12
梁的平面注写包括集中标注和原位标注,集中标注表达梁的通用数值,原位标注表达梁的特殊数值
A. 对
B. 错
根据听力内容选出正确答案。[音频]
A. You're welcome.
B. I'm very pleased.
C. It's my pleasure.
D. Not at all.
根据听力内容选出正确答案。[音频]
A. Let's go out.
B. We plan to have a yare sale in the neighborhood.
C. We can have a picnic.
D. Sorry, I am busy.