如果结果不匹配，请 
更多“请选出三个样品中最好喝的一个（）”相关的问题
An annual report provides __1__ information about an organization.People read annual reports in different ways. Some even __2__ to start at the back and work their way to the beginning. It makes __3__ difference how you read them as long as you get the essential points of the business and its financial condition.However, there is a good way to solve these reports that is __4__ most efficient and most effective. You can’ t possibly go any further in your research __5__ knowing what the company does! How can you insure that you have understood the report? Just ask yourself if you understand what the company does and who its customers are.
（1）__1__
A.useful
B.useless
C.usefulness
二组分凝聚系统相图如附图。
(1)指出各相区稳定存在时的相:三相线上的相平衡关系:
(2)绘出图中状态点为a,b,c三个样品的冷却曲线，并注明各阶段时的相变化。
