双缝干涉实验证实了光是波。

题型:判断题

问题:

双缝干涉实验证实了光是波。

考点:物理学从爱因斯坦到霍金的宇宙从爱因斯坦到霍金的宇宙题库
题型:判断题

阅读理解。

     Sophia is very happy these days. The 13-year-old girl from the UK has a lot of fun during her trip

in Beijing. She eats dumplings, tries Chinese calligraphy (书法), climbs the Great Wall and speaks

Chinese, all for the first time!

     She even stays with a Chinese family for a week. "Beijing is very big and beautiful. And the people

here are very nice!" She says. Sophia comes with her teachers and classmates from the UK. The students

in Shangdi Experimental Primary School of Haidian District receive them. These two schools are "Heart

to Heart" schools. There are 200 "Heart to Heart" schools in Beijing. Each of them has a partner school

in a foreign country. They meet and get to know each other.

1. How old is Sophia?

A. 15          

B. 14          

C. 13          

D. 11

2. How long did Sophia stay with a Chinese family?

A. Two days.  

B. Seven days.    

C. A year.        

D. 6 months.

3. What did Sophia think of Beijing?

A. Big.        

B. Beautiful.    

C. Exciting.      

D. A and B.

题型:判断题

血清中总胆红素增加以结合胆红素增加()

A.溶血性黄疸

B.肝细胞性黄疸

C.胆汁淤积性黄疸

D.Crigler-Najiar综合征

E.Rotor综合征

题型:判断题

以下关于中国梦的表述正确的是()

A.中国梦是习 * * 在十八大闭幕讲话中首次提出的

B.中国梦是习 * * * * 率中央政治局常委和中央书记处的同志参观《复兴之路》展览时首次提出的

C.习 * * 在十二届全国人大一次会议闭幕会上对中国梦进行了深刻阐述,号召人们为实现中国梦而努力奋斗。

D.实现中 * * 伟大复兴,就是中 * * 近代以来最伟大的梦想

题型:判断题

______是研究生态学的最基本的功能单位。

题型:判断题

不接地、消弧线圈接地和高电阻接地系统中变电所电气装置保护接地的接地电阻应符合下列要求:a)高压与变电所电力生产用低压电气装置共享的接地装置,应符合下式要求。R≤()/I但应不大于4Ω。b)高压电气装置的接地装置,应符合下式要求:R≤250/I

A.50

B.120

C.250

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