现浇梁体施工工艺中，支架应采用不小于（）倍施工总荷载进行预压。
A.1.0
B.1.1
C.1.3
D.2.0
参考答案：B
根据短文内容回答问题。
Dear Amy,
How are you ? My name is David. I'm an American boy. For me, sports are fun. I have a collection
of sports things. I have six basketballs , three tennis rackets, nine volleyballs, four soccer balls, and five
baseballs. I play sports and I watch them on TV. Do you play sports?Do you have a sports collection?
1. Is David American?
_____ , _____
2. Are sports fun for David?
3. Does David have a collection of sports things?
4. How many baseballs does he have?
_______________________.
5. Where does David watch sports ?
钻井液性能中对机械转速影响最大的是（）
A、粘度
B、切力
C、固相含量
D、PH值
