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设a、b、c表示三种不同物体的质量,用天平称两次,情况如图所示,则这三种物体的质量从小到大排序正确的是

[  ]

A.

c<b<a

B.

b<c<a

C.

c<a<b

D.

b<a<c

答案:A
解析:

由题意可知,b=2c,a>b.所以a>b>c.


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