Contact us
Choose a category below so we can get back to you as quickly as possible.
=1/2(1-1/3)+1/2(1/3-1/5)+1/2(1/5-1/7)+1/2(7/1-1/9)+1/2(1/9-1/11) =1/2(1-1/11) =5/11 手機提問的朋友在用戶端右上角評估點【滿意】即可. 互相幫助,祝共同進步!
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.