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設a、b、c表示三種不同物體的質量,用天平稱兩次,情況如圖所示,則這三種物體的質量從小到大排序正確的是

[  ]

A.

c<b<a

B.

b<c<a

C.

c<a<b

D.

b<a<c

答案:A
解析:

由題意可知,b=2c,a>b.所以a>b>c.


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