判断题

Models designed to predict short-run exchange rate fluctuations are more accurate than models designed to predict long-run trends.

答案：错误

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A résumé should be ideally limited to o______ page(s), while a CV often runs to three or four pages.（答案一定不要把首字母写出来，答案前后一定不要有空格或标点符号！答案有大小写的区别！）

答案： ne

不定项选择

码元就是有一定幅度或相位的载波，是数字信号的载体，我们也叫它码片。

A．正确
B．错误