下面哪条符合实验性研究的情况A.实验进行的方向是随着实验开始向前进行的 B.必须设立

题型:单项选择题

问题:

下面哪条符合实验性研究的情况

A.实验进行的方向是随着实验开始向前进行的

B.必须设立对照

C.随机分配实验对象到实验组和对照组

D.对实验组施加控制的干预措施或消除某种因素

E.以上都正确

考点:卫生资格考试(中初级)疾病控制基础知识疾病控制主治医师基础知识1
题型:单项选择题

读下面一段话,按拼音在括号内填写汉字,并给划线字注音。(4分)

我看见他dài(  )着黑布小帽,穿着黑布大马褂,深青布棉袍,蹒跚(  )(   )地走到铁道边,慢慢探身下去,尚不大难。可是他穿过铁道,要爬上那边月台,就不容易了。他用两手攀着上面,两脚再向上缩;他肥胖的身子向左微qīnɡ(   ),显出努力的样子,这时我看见他的背影,我的泪很快地流下来了。

题型:单项选择题

She       volleyball regularly for many years when she was young.

A.was playing

B.played

C.has played

D.had played

题型:单项选择题

用所给词的适当形式填空。

1. We should practice ______________(speak) English as much as we can.

2. It's easy for Kitty ___________(cut) out the eyes ,the nose and the sharp teeth.

3. - Where's Millie?

   --Oh, she ____________(wait) for Amy at the school gate.

4. All of us can get lots of presents on                (child) Day.

5. Look at your clothes. How __________(colour) you are today!

6. Why not ____________(take) your dog for a walk after supper?

7. My best friend            (not write) e- mails on Monday .

8. Miss Xi often buys a lot of _______________(mango) on her way home.

9. I think the new shopping mall is a good place ___________(meet) friends.

10. Sandy goes to school without ____________(have) breakfast today.

11. Mum asks me to clean my own bedroom ___________(two) a week.

12. The new coat makes Simon          (look) cool.

13. It's six o'clock now. Millie and Sandy             (not run) in the playground .

14. Do you have enough time           (help) us finish the work?

15.My little sister wants to be a            (dance) when she grows up.

题型:单项选择题

下列会计科目中,如月末有余额,一般在贷方的是()。

A.银行存款

B.长期借款

C.材料采购

D.应收利息

题型:单项选择题

RTX测量采用单基站RTX和()RTK两种方法进行。

A.双基站

B.三基站

C.虚拟基站

D.网络

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