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【单选题】
《史记》的体裁是A.
编年体
B.
国别体
C.
语录体
D.
纪传体
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举一反三
【简答题】My coach and boyfriend says ______ going to the U.S.A. next week. (they are/ he is)
【单选题】在SQL Server 2000中，有商品表(商品号，商品名，单价)和销售表(商品号，销售时间，销售价格)。现要限制“销售价格”的取值必须在此商品“单价”的0.6倍到1.5倍范围之内，实现这个约束的正确代码是______。
A.
CHECK(销售价格BETWEEN单价*0.6 AND单价*1.5)
B.
CHECK(销售价格BETWEEN商品表.单价*0.6 AND商品表.单价*1.5)
C.
CREATE TRIGGER tri_Sales ON销售表FOR INSERT，UPDATE AS IF EXISTS(SELECT*FROM INSERTED a JOIN商品表b ON a.商品号=b.商品号 WHERE销售价格NOT BETWEEN单价*0.6 AND单价*1.5) ROLLBACK
D.
CREATE TRIGGER tri_Sales ON销售表INSTEAD OF INSERT，UPDATE AS IF EXISTS(SELECT*FROM INSERTED a JOIN商品表b ON a.商品号=b.商品号 WHERE销售价格NOT BETWEEN单价*0.6 AND单价*1.5) ROLLBACK
【简答题】It’s a Friday night. Your girl friends are out at a bar and your boyfriend is playing soccer with his mates. Two text messages later, you’re eating pizza and watching action movies with three guy frie...
【简答题】chat on line watch a movie talk on the phone go hiking look at an exhibit flick through newspapers jogging window shopping hang out with friends play with a pet 6. Both Lisa and her bo...
【简答题】简述狭义的和广义的社会化研究领域。
【单选题】在SQL Server 2000中，有商品表(商品号，商品名，单价)和销售表(商品号，销售时间，销售价格)。现要限制“销售价格”的取值必须在此商品“单价”的0.6～1.5倍范围之内，实现这个约束的正确代码是______。 A)CHECK(销售价格BETWEEN单价×0.6 AND单价×1.5) B)CHECK(销售价格BETWEEN商品表.单价×0.6 AND商品表.单价×1.5) C)CREAT...
A.
B.
C.
D.
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