来自董德斌的问题
【单位换算:75cm=______m0.25dm=______mm0.0024m=______cm=______µm3.2×109nm=______mm=______m6400km=______m=______mm0.6×10-10m=______mm=______µm.】
单位换算:
75cm=______m 0.25dm=______mm
0.0024m=______cm=______µm 3.2×109nm=______ mm=______m
6400km=______m=______mm 0.6×10-10m=______mm=______µm.
1回答
2020-04-07 17:53