已知为上的可导函数，当时，，则关于x的函数的零点个数为（）

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已知

为

上的可导函数，当

时，

，则关于x的函数

的零点个数为（）

A：1

B：2

C：0

D：0或 2

上一题下一题 0.0难度选择题更新时间:2015-07-29 12:00:20

答案(点此获取答案解析）

C

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阅读下面短文，根据短文内容完成下面表格中的有关信息。

Hello! My name is Zhou Aiguo. I'm from Wuhan. I live （居住） at Zhongshan Road. My English name is Tim. I like drawing pictures. I'm now studying at No. 1 Secondary School. Peter is my good friend. He is in Class 8, Grade 7. We are in the same class. My telephone number is 8329746. You can write letters to me. Remember （记住） my post code is three one zero zero one two. You can send e-mails to me. My address is ZhouAiguo@126.com. I like to be your friend.

Personal Information

Name: Zhou Aiguo. English name: Tim

Class: Class 8, Grade 7 School: ____

Home address: Zhongshan Road, Wuhan

E-mail address: ____

Phone: ____ Hobby: ____

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答案(点此获取答案解析）

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