2.515修改成小数点后两位有效数字后,其修约值为()。A.2.51B.2.52C.2.510D.2.520
2.515修改成小数点后两位有效数字后,其修约值为()。
A.2.51
B.2.52
C.2.510
D.2.520
参考答案和解析
4.624
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