问题
选择题
The policeman are looking for people________the accident which happened last night. [ ]
A. referred to
B. related to
C. linking to
D. connecting to
答案
答案：B
搜题请搜索小程序“爱下问搜题”
The policeman are looking for people________the accident which happened last night. [ ]
A. referred to
B. related to
C. linking to
D. connecting to
答案：B
点相切．现将一质量m =" 1.0" kg的小物块（可视为质点）从平板车的右端以水平向左的初速度v0滑上平板车，小物块与水平轨道间的动摩擦因数
，小物块恰能到达圆弧轨道的最高点A．取g =" 10" m/s2，求：