已知两个力F1、F2在同一轴上的投影相等,则这两个力()。
A.相等
B.不一定相等
C.共线
D.汇交
参考答案:B
“Would you like a glass of milk ?” “________ I'd like only a cup of tea.
A.Yes, please
B.Yes, thank you.
C.No, thanks.
D.Please don't give me milk.
辨析:坚持两点论就是坚持全面地看问题,坚持重点论就是抓主要矛盾。