问题:
用四舍五入法对318.96取近似值,要求保留四个有效数字,则318.96≈( )
A.318.0
B.318.9
C.319
D.319.0
用四舍五入法对318.96取近似值,要求保留四个有效数字,则318.96≈( )
A.318.0 | B.318.9 | C.319 | D.319.0 |
参考答案: