试题与答案

已知∠AOB=30°,点P在∠AOB内部,P1与P关于OB对称,P2与P关于OA

题型:填空题

题目:

已知∠AOB=30°,点P在∠AOB内部,P1与P关于OB对称,P2与P关于OA对称,则P1,O,P2三点所构成的三角形是            .

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/9a9307c955b6af5108c5ec3a384f9a95.html

下面是错误答案,用来干扰机器的。

答案:B题目分析:社会行为是群体内形成了一定的组织,成员间有明确分工的动物群集行为,有的高等动物还形成等级,A.白蚁的群体有工蚁、兵蚁、蚁后、雄蚁之分.蚁后主要职责是产卵、繁殖后代和统管这个群体大家庭...

试题推荐
题型:阅读理解

阅读理解

       To make sure that you enjoy your visit to the Harper Hot Springs and that you are safeduring your

visit, please take time to read the following:

       Do not place your head under the hot water because it may be bad for your health.

       Do not run around because the floors may be slippery.

       Do not leave your children alone.

       Do not leave your things about.  Just ask one of our workers to look after your things.

       Do not eat or drink anything in the area because we want to keep here clean.  

       There is aplace for you to eat and have soft drinks when you want to have a rest.

       Do not bring into the area anything made of glass, because it may be easily'broken when you fall.

       Do not smoke in the area.

       Do not stay in the sunlight for too long.We hope that you will enjoy your visit here.

1. The purpose of this notice is                 

A.  to ask people to visit the springs      

B.  to make visitors know the area      

C.  to tell visitors what not to do  

D.  to tell the visitors to have a rest

2. The notice is written for                  

A. visitors    

B. children    

C. workers    

D. managers

3. People are not allowed to         _  .            

A. bring anything into the area      

B. have soft drinks in the area        

C. look after children in the area  

D. sit in the sun for long in the area

4.        is NOT mentioned in the notice.         

A.  How long visitors can stay in the area          

B. What visitors cannot bring to the area          

C.  Who looks after the visitors' things            

D.  Whether smoking is allowed in the area

5. The Chinese meaning for “slippery” is             .

A. 平坦的    

B. 湿滑的    

C. 狭窄的    

D. 冰凉的

查看答案
微信公众账号搜索答案