纵向受力钢筋为4φ20和2φ12且直接承受动力荷载的构件，采用机械

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问题单项选择题

纵向受力钢筋为4φ20和2φ12且直接承受动力荷载的构件，采用机械连接的，按规定在700mm的接头区段内，不能同时有接头的是( )。

A．2根直径20mm和1根直径12mm钢筋

B．3根直径20mm钢筋

C．1根直径20mm和2根直径12mm钢筋

D．2根直径20mm钢筋

答案

参考答案：B

句型转换

按要求改写下列句子，每空填一词。

1. He studies at No.1 Middle School. (改为否定句)

He _____ _____ at No.1 Middle School.

2. He plays basketball very well. (改为同义句)

He is _____ _____ playing basketball.

3. My brother walks to the school every day. (改为同义句)

My brother goes to school _____ _____ every day.

4. She never goes roller skating. (对划线部分提问)

_____ _____ does she go roller skating?

5. There is some bread on the table. (改为一般疑问句)

_____ there _____ bread on the table?

判断题

桥面护轮轨两端应伸出桥台挡砟墙外不少于10m后，将其弯曲交会于轨道中心。