试题与答案

Kofi Annan says helping survivors of last

题型:填空题

题目:

Kofi Annan says helping survivors of last week’ s earthquake and (1) in the Indian Ocean is (2) . The United Nations secretary- general says countries that have offered aid must (3) and provide it. The offers add up to around (4) dollars. United Nations officials say (5) of that is needed during the next six months. The concern about offers of international aid is (6) . For example, the earthquake in Barn, Iran, in (7) of 2003 killed more than (8) people. Countries and groups offered hundreds of millions of dollars (9) .The United Nations says it has (10) only about (11) dollars in aid received so far. Governments and organizations that offered help (12) that, however. On (13) Mr. Annan met with world leaders in Jakarta, Indonesia to discuss aid for (14) . The leaders discussed and (15) the idea of (16) owed by affected nations. But the leaders did not say they would do so. Some said that (17) to survivors would be more helpful. Representatives of (18) countries and international organizations attended the meeting in Jakarta. Officials say they will cooperate to develop (19) for the Indian Ocean and the (20) .

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, B

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题型:问答题

如图所示为一简易火灾报警装置。其原理是:竖直放置的试管中装有水银,当温度升高时,水银柱上升,使电路导通,蜂鸣器发出报警的响声。27℃时,空气柱长度L1为20cm,水银上表面与导线下端的距离L2为10cm,管内水银柱的高度h为8cm,大气压强为75cm水银柱高。

(1)当温度达到多少摄氏度时,报警器会报警?

(2)若水银柱上升过程中,被封闭气体吸收热量9×10-2J,对外做功6×10-2J,求封闭气体内能的变化量。

(3)如果大气压增大,则该报警器的报警温度会受到怎样的变化?

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