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问题 填空题

已知a＞b，如果a2-b2，2ab是三角形较小的两条边，那么当第三边等于______时，这个三角形是直角三角形．

答案

设第三边等于x时，这个三角形是直角三角形，

则x=

(a2-b2)2+(2ab)2
=a2+b2．

故答案为：a2+b2．

单项选择题

沉降法

A．定方向径
B．筛分径
C．有效径
D．比表面积等价径
E．平均粒径
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单项选择题

Network management helps you to (66) the strengths and weaknesses of your network, as well as determine any configuration changes that may be necessary. Any controlled changes to your network and its components-especially configurations, software and (67) , can have an effect on its overall efficiency. To maintain control, you need the tools and knowledge to manage all activity that has the potential to affect your (68) .

A．see

B．know

C．monitor

D．control
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