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【单选题】
在Visual FoxPro中sQL支持集合的并运算，其运算符是（ ）。 A.UNlONB.ANDC.JOIN#A.
在Visual FoxPro中sQL支持集合的并运算，其运算符是（ ）。 A.UNlON
B.
AND
C.
JOIN
D.
PLUS
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【简答题】从方框内选择合适的句子补全对话。 A: What's the matter, Mr. Smith? B: 1_____ I can't do any work, doctor. A: Do you have a cough? B: No, I don't have a cough. . A: 2_____ B: Yes, I sleep very well. A: Do you have brea...
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