问题
选择题
Paris is the__________ of France. [ ]
A. city
B. town
C. capital
D. village
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Paris is the__________ of France. [ ]
A. city
B. town
C. capital
D. village
答案：C
的人处于静止状态，如果要使定滑轮上端的绳子拉力为零，人应如何运动，加速度多大？