测量接触网的弹性需要解决两个问题：第一，确定接触线的初始高度；第二，测量一定抬升力作

复牌时对已接受的申报实行集合竞价，只揭示集合竞价( )。

A．参考价格

B．成交价格

C．未匹配量

D．匹配量

语法填空

     A man recognized as a genius in business circles was invited as an honor guest to a TV interview.

Everybody was eager to hear a success story from him. He,1.________, only said with a slight smile:

"Wouldn't it be better for me to ask you for 2.________  (advise) on a certain problem?"

     Here is the problem he raised: "People all rushed to the place 3.________a gold mine had recently

been discovered but they were blocked by a river 4.________ (flow) across the only way to it. What

would you do if you 5.________ (be) among them?"

     "Make a roundabout way," someone suggested.

     "Swim across," said another.

     The genius smiled 6.________ a word. Then he gave his view: "Why not do 7.________ else instead of rushing to the mine? How about buying a boat to do some ferrying?"

     The audience was shocked. He explained calmly: "The man could make 8.________ great amount

of money from the passengers. They were willing to pay for the ferry 9.________ there was gold on the

other bank."

     Do what others have not thought to do or something never attempted before-that is the key 10.________success. A difficult circumstance, in the eyes of a wise man, often means a potential chance for success.

小儿肺炎停用抗生素的指征是（）。

A.用至体温正常后5～7天，临床症状体征基本消失后3天

B.用至体温正常后2～3天，临床症状体征基本消失后3天

C.用至体温正常后4～5天，临床症状体征基本消失后3天

D.用至体温正常后5～7天，临床症状体征基本消失后1天

E.用至体温正常后5～7天，临床症状体征基本消失后5天

肾综合征出血热的传染源不包括

A．黑线姬鼠
B．褐家鼠
C．狗或猫
D．鸡
E．家兔

纸质、布质壁纸当单位重量小于300g/m²，且直接粘贴在A级基材上，可以作为A级装修材料使用。（）