通常将三萜类化合物分成几小类A．2 B．3 C．4 D．5 E．6

阻塞性睡眠呼吸暂停综合征（OSAS）是指每次发作时，口鼻气流停止达多长时间？（）

A.10秒

B.7秒

C.30秒

D.15秒

E.20秒

完成句子

1. So ________________(地震如此猛烈)that people didn't escape before they realized it.(violent)

2. It was at the very beginning that she made the decision ________________(我们派遣)more 

    firefighters there.(send)

3. ________________(我们应该制定一项计划)to deal with the present serious situation is

   important. (work)

4. It was James Watt's observation of steam from a kettle ________________(产生)the idea of the

    steam engine.(birth)

5. Whether life will continue on the earth for millions of years to come will depend on ________(是否

    能解决这一问题). (solve)

6. People in Chongqing are proud of ________________(他们所取得的成就)in the past ten years.

    (achieve)

7. I was ________________(拜访他)last Wednesday but I had an unexpected visitor.(see)

8. All those second－hand goods are sold ________________(以低于30%的价格) than before.(low)

9. News came from the school office ________________( 她已被录取) Beijing University.(admit)

10. An air France jet is reported ________________( 坠落)in the Atlantic Ocean with 228 people

      aboard,   the airline's worst disaster in its 75 －year history.

传动轴弯曲将引起（）。

只有自由度为1的机构才具有确定的运动。

平衡记分卡（BSC）是作为战略部署和绩效管理的有效工具，自20世纪末以来被各类组织广为应用，它从财务、顾客、（）以及学习与成长等四个领域（或维度），将组织的愿景、战略目标转化为部门和个人的目标。

A、员工

B、竞争对手

C、管理制度

D、内部业务流程