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(2010•自贡)为估计池塘两岸A、B间的距离,杨阳在池塘一侧选取了一点P,测得...
(2010•自贡)为估计池塘两岸A、B间的距离,杨阳在池塘一侧选取了一点P,测得PA=16m,PB=12m,那么AB间的距离不可能是( )
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A.5m
B.15m
C.20m
D.28m
考点分析:
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