应对项目的可交付成果负主要责任的是（）。A.质量经理 B.项目经理 C.高级经理层

阅读理解。

     Please look at the Flight Timetable and choose the right answers.

     (departure=leaving)

1. You'll go to Australia. You can only take _____ when you reach Beijing Airport at eleven forty.

A .CA923

B. CA149

C. CA147

D. CA167

2. If you spend fourteen hours and ten minutes going to France, you must stay in _____ on the way.

A. Hong Kong

B. Shanghai

C. Moscow

D. Chengdu

3. It will take you to reach England if you stop in Hong Kong.

A. nine hours and twenty

B. ten hours and thirty-five

C. twelve hours and fifty

D. ten hours and forty-five

4. You may _____ in Beijing if you want to go to America.

A. take one plane

B. take two planes

C. take three plane

D. not take any planes

5. How many planes may you take in Beijing if you want to go to Australia?

A. One

B. Two

C. Three

D. Four

在通常条件下，下列各组物质的性质排列不正确的是(  )

A．熔点：CO₂<KCl<SiO₂

B．沸点：乙烷＞戊烷＞2­甲基丁烷

C．密度：苯<水<1,1,2,2­四溴乙烷

D．热稳定性：HF＞HCl＞H₂S

选择恰当的语句，依次填入下面一段感动中国人物（刘伟）颁奖词的横线处，衔接恰当的一项是：[ ]

　　                                   ，                                 ，                                ，用双脚在琴键上写下：相信自己。　　　　　　　　，正是他努力飞翔的轨迹。

①他依然固执地为梦想插上翅膀  

②那变幻的旋律

③当命运的绳索无情地缚住双臂  

④他依然执拗地屹立在钢琴旁

⑤平静而坚定的眼神  

⑥当别人的目光叹息生命的悲哀

A.⑥③①/② 

B.③⑥④/②

C.③⑥①/②

D.⑥③①/⑤

X线影像显示为根管不规则增宽的是

A．弥散性牙髓钙化
B．局限性牙髓钙化
C．牙内吸收
D．牙根吸收
E．畸形舌侧窝

在测定高浓度和低浓度样品时，采用示差分光光度法，为的是提高测定的（）

A.稳定性

B.再现性

C.准确度

D.精密度

E.灵敏度和准确度