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已有"歌手"表,将该表中的"歌手号"字段定义为候选索引、索引名是ternp ,正确的SQL语句是：【 】TABLE歌手ADD UNIQUE歌手号TAG temp

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参考答案：ALTER

解析：用SQL建立索引属于对表结构的修改要用ALTER短语。

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电流所做的功跟______、______和______有关．电功在数值上等于______．
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The doctor-patient relationship is one of the (1) relationships in life, but many people say this relationship is beyond (2) . Can this relationship be saved The answer is (3) yes, because it must. And if that is lost, medicine becomes a technology and is (4) . In part the crisis in medicine began with doctors (5) themselves from patients.
The more critical work of a doctor happens in the taking of the human (6) . (7) is the most important and most difficult single transaction. The studies show that (8) of all the valuable information that leads to correct diagnosis comes from the history. Another (9) comes from the physical examination, 10% comes from simple (10) tests, and 5% comes from all the complex (11) . So listening is vital, because listening is not merely listening, but to establish a (12) .
But some doctors think listening is (13) . They like to use complex and costly (14) , and use (15) that create adverse reactions and require (16) . They don’t like to listen. Because there’s no premium on listening and that there’s no (17) for listening.
Even so, the doctor-patient relationship is not (18) saving. Because people may ask, what is good health And good health begins first and foremost with (19) . If you don’t care for a (20) , be somebody else, but don’t be a doctor!
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