挑战习题
1/5单选题
难度:

1.已知AB=10cm,以AB为直径作圆,那么在此圆上到AB的距离等于5cm的点共有()
A 无数个
B 1个
C 2个
D 4个
提示1:
5om+5Yiw5LiOQULlubPooYzkuJTot53nprvkuLo155qE5Lik5p2h55u057q/5Y2z5Y+v77yO
正确答案:Qw==
6Kej77ya5LulQULkuLrnm7TlvoTkvZzlnIbvvIzpgqPkuYjliLBBQueahOi3neemu+etieS6jjVjbeeahOeCueWcqOS4pOadoeS4jkFC5bmz6KGM5YiwQULnmoTot53nprvkuLo155qE55u057q/5LiK77yM6ICM6L+Z5Lik5p2h55u057q/5LiO5ZyG55qE5Lqk54K55Y+q5pyJ5Lik5Liq77yOPGJyPuaVhemAiUPvvI4=