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【简答题】
有一函数 y = ⎩ ⎨ ⎧ 1 0 − 1 x > 0 x = 0 x < 0 ,以下程序段中错误的是()。 (5.0分) A. if(x > 0) y = 1; else if(x == 0) y = 0； else y = -1; B. y = 0; if(x > 0) y = 1; else if(x C. y = 0; if(x >= 0); if(x > 0) y = 1; else y = -1; D. if(x >= 0) if(x > 0) y = 1; else y = 0; else y = -1;
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反馈参考答案：
举一反三
【判断题】When using a concentrated marketing or niche marketing strategy, a firm goes after a small share of a large market.
A.
正确
B.
错误
【单选题】A successful niche marketing strategy relies on a firm's ________.
A.
availability of services
B.
product positioning
C.
superior products
D.
knowledge of customer needs
E.
affordable pricing
【单选题】A successful niche marketing strategy relies on a firm's ________.
A.
availability of services
B.
product positioning
C.
superior products
D.
knowledge of customer needs
E.
affordable pricing
【简答题】Consultants sometimes advise companies to focus more on niche marketing.
【简答题】Niche marketing
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