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点O，则图中的全等三角形共有
以下列线段a、b、c的长为边，能构成直角三角形的是
| A．a="3," b="4," c=6 | B．a="1," b= , c= |
| C．a="5," b="6," c=8 | D．a=，b=2，c= |
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以下列线段a、b、c的长为边，能构成直角三角形的是
| A．a="3," b="4," c=6 | B．a="1," b=, c= |
| C．a="5," b="6," c=8 | D．a=，b=2，c= |
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