调整制动缸活塞行程时两转向架制动力须均衡，其2根下拉杆圆销组装后的销孔相差不超过（）

根据句意及所给的首字母，在每句空格处填写一个适当的单词。

1. She often borrows books from school l________.

2. September is the n________ month of the year.

3. She likes m________ model ships with her friends.

4. It t________ her an hour to do her homework.

5. She loves c________ with her friends on the phone.

6. I have about three h______ English books.

7. What's his telephone n________?

8. Kate is Mr. Green's d________. She is six.

9. We're in the s______ class.

10. Look! This is a p______ of my family.

卫生统计学的主要内容是（）

A.实验设计和调查设计

B.实验设计和统计设计

C.统计设计和调查设计

D.统计描述和统计推断

E.数据收集和数据整理

排污收费就是环保部门对企业进行罚款。

如果出口货物是以FOB 价格条件成交，则订舱行为可能是在货物进口地或卸货港进行。( )