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问题 多项选择题

为适应北极风电的大规模开发，需要重点研究（）等技术，解决风机耐受北极极端气候问题。

A.风机机体加热

B.叶片表面憎水涂料

C.耐低温材料

D.稳固基座

答案

参考答案：A, B, C

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 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) .
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单项选择题

了解门脉高压所致食道、胃底静脉曲张的情况可做

A．消化道钡餐造影

B．B超

C．CT

D．MRI

E．肝功能
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