题目

如图所示的装置处于平衡状态（0为支点）、杠杆上每格等距。已知物重G=360N。若不计绳重、摩擦、杠杆和滑轮重，则F大小应为（） A . 180N B . 120N C . 540N D . 60N 答案：DMillie is taking an exam.Help her read the sentences and complete them with‘the same as'or‘different from'. Ann's hairstyle is________Mary's hairstyle.