A.21.5~22.5m/s B.16.5~17.5m/s C.14.5~15.5m/s D.10~11m/s

题目

A.21.5~22.5m/s
B.16.5~17.5m/s
C.14.5~15.5m/s
D.10~11m/s

相似考题
参考答案和解析
答案:C
解析: