某气球不充气时质量为m kg，当充入氦气达5000 m3时进行飞行（假设气球内外

单词拼写（共 10 小题；每小题 1分．满分 10 分）

小题1:He is as s___________ as a donkey. No one can persuade him to change his mind.

小题2:By the Internet, we can c_____________ with people all over the world.

小题3: Nowadays, many tall buildings have e___________ for people to go up and down.

小题4:After the war, a new g____________ was set up for that country.

小题5: Though I haven’t met him for many years, I could r___________ him immediately when I saw him in the crowd.

小题6: If you spend more time reading your English, you can improve it r___________.

小题7: I am d__________ to change my job. No one else can change my mind.

小题8:Because of global warming, there are more and more natural d___________.

小题9: Whether you will succeed or not depends on your a__________ to it.

小题10:The workers made great efforts to r_________ the people who were trapped underground.

制造不承压的塔节或容器可采用（）。

A．低碳

B．不锈钢

C．铸铁

D．铝

（）是在泵的转速不变的情况下，输出流量可以改变的液压泵。

卫生应急机制主要包括指挥决策机制、（）、监测预警机制、应急响应机制、信息发布与通报机制、社会动员机制、应急保障机制、国际和地区间交流与合作机制、督导评估机制、恢复重建机制、责任追究与奖励机制

A、监督管理机制

B、组织协调机制

C、心理防御机制

D、经费保障机制

仓库内的害虫大多来源于（），能适应仓库的环境而继续繁殖。

A、江河湖泊

B、生产车间

C、农作物

D、生活区域