来自黄登山的问题
单位换算:①6300米=______千米;②800厘米3=______米3③3600秒=______小时;④7×106克=______千克;⑤2.7g/cm3=______Kg/m3⑥54km/h=______m/s.
单位换算:
①6300米=______千米;
②800厘米3=______米3
③3600秒=______小时;
④7×106克=______千克;
⑤2.7g/cm3=______Kg/m3
⑥54km/h=______m/s.
1回答
2020-04-07 16:52