单选题将12.550修约为至十分位的0.2个单位正确写法是( )。A12.50B12.54C12.56D12.5
单选题
将12.550修约为至十分位的0.2个单位正确写法是( )。
A
12.50
B
12.54
C
12.56
D
12.5
参考解析
解析:
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