下列事件发生的可能性为100%的是

A．随意翻到一本书的某页，这页的页码是奇数

B．一个数和它的相反数的和是0

C．度量三角形的内角和，结果是360°

D．今天会下雨

In relation to partnership law, discuss the essentials that will distinguish the partnership agreement from other agreements. (10 marks)