帕累托最优是用来衡量城市范围内的资源是否实现了优化配置的重要标准。()
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现在()的大学生找不到合适的工作。
A50%
B40%
C60%
D85%
确定顾客的忠诚度需观察顾客的()。
A态度
B行为
C需求
D购买力
企业竞争者包括()。
A愿望竞争者
B一般竞争者
C产品形式竞争者
D品牌竞争者
Why does the man respond negatively to the womans suggestion？
A. Because he wants to surprise his wife on their anniversary.
Because the woman can"t cancel his reservation record.
C. Because he doesn"t appreciate the woman"s calling.
D. Because he doesn"t understand what the woman means.
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