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问题 解答题

一个数小数点向右移动两位，再缩小10倍，大小不变．______．

答案

一个数小数点向右移动两位，即扩大了100倍，再缩小10倍，此时该数比原来扩大了10倍，所以一个数小数点向右移动两位，再缩小10倍，大小不变，说法错误，

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单项选择题

Network managers have long awaited practical voice-over-IP (VOIP)solutions. VOIP promises (71) network management and decreases costs by (72) a company’s telephony and data infrastructures into one network. And a VOIP solution implemented at a company’ s head -quarters with far -reaching branch offices can (73) tremendous amounts of (74) in long distance phone bills, provided that solution delivers POTS -like voice (75) over the Internet.

（75）处填（）。

A．qualtity

B．quality

C．volune

D．speed
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判断题

具有相同市场价值的房地产，其投资价值因人而异。( )
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