克、千克、吨是请选择CBA1]6M/s)`1h9{9H'|单位。+E,z(O7y.@'c'R4M8R
A.长度+E,z(O7y.@'c'R4M8R
B.重量+E,z(O7y.@'c'R4M8R
C.时间+E,z(O7y.@'c'R4M8R