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【判断题】
两阶段法求解时,第一阶段问题最优变量全部非人工变量,则原问题有最优解A.
正确
B.
错误
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【简答题】针对不同的依恋类型,你觉得应该采取怎样的方式帮助幼儿消除焦虑?
【单选题】E-business is about transforming business process and _______then with Internet technologies.
A.
integrates
B.
integrating
C.
to integrate
【单选题】Which statement about business intelligence is accurate?
A.
Intelligence gathering is an unethical business practice.
B.
Running an intelligence program requires many people.
C.
Running an intelligence program requires many computers and other resources.
D.
Collecting intelligence about competitors violates antitrust laws.
E.
Business intelligence is not equal to espionage.
【简答题】求每个仓库中职工的平均工资：SELECT 仓库号,AVG(工资) FROM 职工【 】仓库号。
【单选题】Which of the following is true about business purchases?
A.
Business purchases involve more professional purchasing effort than consumer purchases.
B.
Business purchases involve fewer participants in decision-making compared to consumer purchases.
C.
Purchasing agents are absent in business purchases.
D.
Business purchases involve less technical and economic considerations compared to consumer purchases.
E.
Business purchases are usually quicker and more informal than are consumer purchases.
【简答题】聚氯乙烯绝缘聚氯乙烯护套电力电缆长期工作温度不超过（ ）℃。
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