治理泥石流方法很多，下列（）措施适合于在上游形成区进行。（） A.修筑挡水坝 B.修

正常运动单位电位，下列哪项是错误的（）。

A.相位数为2～3相

B.振幅300μV～5mV

C.上升时间小于0.5ms

D.多相运动单位电位（多于四相）>15%

E.电位时限3～16ms

用所给词的正确形式填空。

1. Would you mind                (not play) basketball in the classroom?

2. When someone cuts in line, people will get                (annoy).

3. Tomorrow is Sunday. I will have a lot of clothes                 (wash). So I will be very busy.

4. Would you mind                (I) opening the door?

5. Could you please                (turn) down the music, please?

6. The more Leo learns about Chinese, the                (much) he enjoys himself in China.

7. I                (order) a hamburger for my friend.But the clerk gave me French fries.

8. Mr. Brown                (arrive) already. He                (arrive) an hour ago.

9. How long have you been                (listen) to music videos?

x²+x-6＞0的解集是( )．

A．(-∞，-3)

B．(-3，2)

C．(2，+∞)

D．(-∞，-3)∪(2，+∞)

E．以上结论均不正确

将考生文件夹下FIVE\SIX文件夹中的文件REPORT.TXT复制到考生文件夹下的FIVE\SIX\SEVEN文件夹中。

什么叫八会穴，歌诀？