40cm=几分之几米?2500千米=几分之几吨?

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40cm=几分之几米?2500千米=几分之几吨?40cm=几分之几米?2500千米=几分之几吨?40cm=几分之几米?2500千米=几分之几吨?40cm=2/5米;后面的,一个是长度单位,一个是重量单

40cm=几分之几米?2500千米=几分之几吨?
40cm=几分之几米?2500千米=几分之几吨?

40cm=几分之几米?2500千米=几分之几吨?
40cm=2/5米;后面的,一个是长度单位,一个是重量单位.千米和吨没法换算的.

五分之二米