- 气体压强的微观意义
- 共167题
下列说法正确的是
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正确答案
如图所示,电路与一绝热密闭气缸相连,Ra为电阻丝,电源有内阻,气缸内有一定质量的理想气体,电键S闭合,现将变阻器的滑动片向下移动的过程中,下列说法正确的是( )
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.The "the world's miracle economy" in the beginning of the second paragraph refers to()
A.Asia's real boat-rocker.
B.China's economic success.
C.Japan's economic success.
D.both China and Japan's economic success.
正确答案
B
解析
推理题。文章一开始就谈到,亚洲真正掌舵的是中国,而不是日本;第二段第二句也提到“…中国正变得太成功”,由此可推知第二段开头的“世界的奇迹经济”指的就是中国的经济成功,所以[B]项正确。[A]“亚洲真正的掌舵者”,[C]“日本的经济成功”和[D]“中国和日本的经济成功”都不是文章所要表达的内容。
在用注射器验证玻意耳定律的实验中,利用p-1/V图线来验证,若根据实验数据画出的图线不是直线,而出现了如图所示的情景,则可能的原因是( )
正确答案
封闭在气缸内一定质量的理想气体,如果保持气体体积不变,当温度降低时,以下说法正确的是
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正确答案
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