题目

下列表示法，哪个正确？A. N = 28000 (8000) mmB. N = 2.03 (0.18) kgC. N = 10.8000 (0.2) cmD. N = 12 km + 100 m

下列表示法，哪个正确？

A. N = 28000 (8000) mm

B. N = 2.03 (0.18) kg

C. N = 10.8000 (0.2) cm

D. N = 12 km + 100 m

题目解答

答案

B. N = 2.03 (0.18) kg