选C,
一个数从左边第一个不为0的数字数起到末尾数字为止,所有的数字(包括0,科学计数法不计10的N次方),称为有效数字.
3.010×10的5次方的有效数字是
3.010×10的5次方的有效数字是
A3,1 B 1 C 0 D3,0选择哪个
A3,1 B 1 C 0 D3,0选择哪个
数学人气:601 ℃时间:2020-01-28 01:13:28
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