问题 填空题 请将下列方框中计量单位按要求归类,将序号填在相应的横线上。A. millimeter (mm) B. kilogram (kg) C. centimeter (cm) D. meter (m) E. gram (g) F. kilometer (km) G. foot (ft) H. ton (t/tn)1. Units of length: 2. Units of weight: 答案 1. A C D F G 2. B E H