下列各组线段中,属于成比例线段的是A.1cm,2cm,3cm,4cm B.根号2cm根号5cm,根号3cm,1cm C.1cm,根号2cm,2cm,2根号2cm D.2cm,5cm,3cm,4cm

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下列各组线段中,属于成比例线段的是A.1cm,2cm,3cm,4cm B.根号2cm根号5cm,根号3cm,1cm C.1cm,根号2cm,2cm,2根号2cm D.2cm,5cm,3cm,4cm
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下列各组线段中,属于成比例线段的是A.1cm,2cm,3cm,4cm B.根号2cm根号5cm,根号3cm,1cm C.1cm,根号2cm,2cm,2根号2cm D.2cm,5cm,3cm,4cm
下列各组线段中,属于成比例线段的是A.1cm,2cm,3cm,4cm B.根号2cm根号5cm,根号3cm,1cm C.1cm,根号2cm,2cm,2根号2cm D.2cm,5cm,3cm,4cm

下列各组线段中,属于成比例线段的是A.1cm,2cm,3cm,4cm B.根号2cm根号5cm,根号3cm,1cm C.1cm,根号2cm,2cm,2根号2cm D.2cm,5cm,3cm,4cm
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