下列哪项不是Begg矫治器的组成部分（） A.Begg托槽 B.栓钉 C.正轴簧 D

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问题单项选择题

下列哪项不是Begg矫治器的组成部分（）

A.Begg托槽

B.栓钉

C.正轴簧

D.扭转簧

E.方丝

答案

参考答案：E

解析：Begg细丝弓矫治技术是Begg医师于20世纪50年代公布的。其组成部分包括Begg托槽、支抗磨牙颊面管、弓丝、栓钉及扭转簧等；方丝不应用于Begg矫治技术。

填空题

单词拼写。

1．In a library,books and magazines are usually c________ by subject.

2．Finally,the Red Army finished the worldfamous Long March by o________ countless difficulties.

3．There is no doubt that the 17th National Congress of CPC is of great s________ to China's future.

4．His words c________ an unfriendly attitude made the people present annoyed.

5．She often c________ to her boss about her being paid badly.

6．He is expected to ________(阐明)his position at the conference.

7．Do make a careful ________(选择)before you act.

8．There have been many ________(冲突)though the world is in peace generally.

9．Her style of writing is rather ________(独特的)．

10．The invention of the printing press caused a ________(革命)in learning.

单项选择题

某建设项目计算期为10年，各年的净现金流量如下表所示，该项目的行业基准收益率为10%，则其财务净现值为（）万元。

年份(年末)	1	2	3	4	5	6	7	8	9	10
净现金流量(万元)	-100	100	100	100	100	100	100	100	100	100

A．476.85

B．394.17

C．485.09

D．432.64