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【判断题】
调和平均数是加权算术平均数的变形,其计算结果完全相同,经济意义也一样,只是因掌握的资料不同而采用不同的计算形式而已。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】A．constant B．persisting C．stable D．lasting
【判断题】Companies should develop a lasting identity by being connected to a simple idea or a story.
A.
正确
B.
错误
【单选题】When We reached the station the train had not arrived yet；so we_______．
A.
neednt have hurried
B.
didn’t need to hurry
C.
need not to hurry
D.
had not needed to hurry
【单选题】Resveratrol is the fourth factor recently found that causes a breast cancer to develop.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】A．had B．enjoying C． D．lasting
【判断题】To develop lasting relationship with customers, marketing-oriented firms need to focus on customer satisfaction both before and after each sale.
A.
正确
B.
错误
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