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问题 单项选择题

DL/T869－2004中规定，当管道公称直径大于500mm时，同管道两个对接焊口间距离不得小于（）。

A.150mm

B.200mm

C.300mm

D.500mm

答案

参考答案：D

单项选择题 A1/A2型题

关于CT密度分辨率测试的表述，正确的是（）

A.使用高分辨率测试板测试

B.可使用星模卡测试

C.以能分辨出对比度差为0.3%时的物体直径值（mm）表示

D.是与伪影有关的一种参数测试

E.可同时了解噪声的大小
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填空题

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 Bam, 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)________.
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