- 实验:用双逢干涉测量光的波长
- 共638题
用单色光做双缝干涉实验,在屏上会得到明暗相间的条纹。关于这个实验,下列说法中正确的是
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正确答案
在光的双缝干涉实验中,在光屏上放照相底片,并设法减弱光子流的强度,尽可能使光子一个一个地通过狭缝,在曝光时间不长和曝光时间足够长两种情况下,实验结果是
[ ]
正确答案
如图是双缝干涉的实验装置示意图,其中S是单缝,S1、S2为双缝,P为光屏,实验时从左侧入射平行光,判断下述说法中正确的是( )
正确答案
Asia’s real boat-rocker is a growing China, not Japan, a senior American economist observed.
There is so much noise surrounding and emanating from the world’s miracle economy that it is becoming cacophonous. In Washington, D. C., the latest idea is that China is becoming too successful, perhaps even dangerously so: while Capitol Hill resounds with complaints of trade surpluses and currency manipulation, the Pentagon and sundry think-tanks echo to a new drumbeat of analysts worrying about China’s 12.6% annual rise in military spending and about whether it might soon have the ability to take preemptive military action to force Taiwan to rejoin it. So it may be no coincidence that for
three consecutive weekends the streets of big Chinese cities have been filled with the sounds of demonstrators marching and rocks being thrown, all seeking to send a different message: that Japan is the problem in Asia, not China, because of its wanton failure to face up to its history; and that by cosying up to Japan in security matters, America is allying with Asia’s pariah.
Deafness is not the only risk from all this noise. The pressure towards protectionism in Washington is strong, and could put in further danger not only trade with China but also the wider climate for trade liberalisation in the Doha round of the World Trade Organisation (WTO). So far words have been the main weapons used between China and Japan, but there is a chance that nationalism in either or both countries could lead the governments to strike confrontational poses over their territorial disputes in the seas that divide them, even involving their navies. And the more that nationalist positions become entrenched in both countries but especially China, the more that street protests could become stirred up, perhaps towards more violence.
All these issues are complex ones and, as is often the case in trade and in historical disputes, finding solutions is likely to be far from simple. A revaluation of the yuan, as demanded in Congress, would not rebalance trade between America and China, though it might help a little, in due course. A "sincere" apology by Japan for its wartime atrocities might also help a little, but it would not suddenly turn Asia’s natural great-power rivals into bosom buddies. For behind all the noise lies one big fact: that it is the rise of China, not the status or conduct of Japan, that poses Asia’s thorniest questions.How will the territorial disputes between China and Japan be settled according to the author()
A.By words and negotiations.
B.By their navies.
C.By more violence.
D.Unclear.
正确答案
D
解析
细节题。文章第三段第三句提到“迄今为止,言语是中日之间使用的最主要的武器,但是两国之一或两国的民族主义可能有机会引导政府打击其面临的对将其分割开来的海洋领土争端所作的姿态,甚至动用其海军”,但是就中日将怎样解决其领土争端,作者并没有给出一个明确的说明,所以[D]“不明确”符合文意。[A]“通过言语和谈判”,[B]“通过其海军”和[C]“严通过更多的武力”都不是作者提及的内容。
某同学在“用双缝干涉测光的波长”实验中,利用绿光做光源在光屏上得到如图所示的干涉条纹,下列与此实验相关的判断正确的是( )
正确答案
强调人际关系,企业如同一个大家庭,彼此关心爱护,忠心敬业,发扬企业良好传统称为( )。
A.家族式企业文化B.发展式企业文化C.市场式企业文化D.官僚式企业文化
正确答案
A
解析
暂无解析
第一后全国康复专业技术初、中级资格考试举行的时间是
A.1999年
B.2000年
C.2001年
D.2002年
E.2003年
正确答案
D
解析
暂无解析
用单色光做双缝干涉实验,下述说法中正确的是:()
正确答案
下列说法正确的是( )
正确答案
下列说法正确的是( )
正确答案
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