桥上UM71轨道电路怎样调整？

下列属于《证券投资基金法》规定的巨额赎回的是（）。

A.开放式证券投资基金单个开放日，基金净赎回申请超过基金总份额的10%

B.开放式证券投资基金连续7个开放日，只有赎回申请，没有申购申请

C.单笔赎回单位超过1亿

D.当日累计赎回单位超过2亿

根据句意和首字母提示完成句子。

1. I have a toothache, I have to see a d______.

2. —What's the matter with you?

    —I have a s______ throat.

3. It's important for us to have a healthy lifestyle, to eat a b______ diet.

4. My English isn't good enough, so I must try my best to i______ it.

5. When you have a headache, please lie down and r______.

6. She is tired, she should go to bed early, she s______ go to the party.

7. Would you please get me some water? I'm a little t______.

8. I didn't go to school u______ I was seven years old.

9. A good l______ is good for our health.

10. My grandpa had a cold yesterday, I h   _  __ he is better now.

在如图所示电路中，已知电压表V₁、V₂和V₃的示数分别为6V、5V和3V，那么电灯L₁两端的电压为_____V，L₂两端的电压为_____V，L₃两端的电压为______V。

幼儿园应该如何预防传染病?

牛胃是由组成（）。