单项选择题

Excel 2010中()函数返回当前日期中月内的天数。

A.DAY
B.DATEVALUE
C.MONTH
D.NOW

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It can be inferred from Paragraph 4 and 5 that______.
A．Positions in Poland's high-tech areas are short in supply
B．Poland's high-tech sector has fully developed
C．Poland lacks spirit of innovation
D．EU will stop financing the R&D of Poland

A.
A．Positions
B.Poland's
C.Poland
D.EU

单项选择题

向显示器输出一串字符应使用的DOS调用号是()。

A.07H
B.08H
C.09H
D.OAH