在未采取措施时,现浇框架结构的伸缩缝最大间距为______m。
A.55 B.65 C.75 D.90
参考答案:A
解析: 根据《混凝土结构设计规范》第8.1.1条。
单句改错
1. I like playing football, but I don't have a friend to play.
A B C ( )
2. I am enjoying to sing English songs.
A B C D ( )
3. We find the speakers to talk too fast.
4. There's an English club in our school. Would you like to join in it?
5. These are new words in this lesson. Please write down them.
X、Y、Z均为短周期元素,Z的原子序数等于X、Y的原子序数之和,Z的原子最外层电子数为奇数,且Z的阴离子比X的阳离子多三个电子层,下列推断中不正确的是( )
A.Y的原子半径大于Z的原子半径
B.X可能为金属元素
C.Y一定为非金属元素
D.Z一定位于第三周期