避免物理性与化学性配伍变化的方法有（）

A.改变贮存条件

B.改变调配次序

C.改变溶剂

D.添加附加剂

E.改变制备工艺

You are a project manager for a small project. Your project was budgeted for ￥500,000 over a six-week period. As of today, you've spent￥260,000 0fyour budget to complete work that you originally expected to cost ￥280,000.According to your schedule, you should have spent ￥300,000 by this point. Based on these circumstances, your project could be best described as （）

A.ahead of schedule

B.behind schedule

C.on schedule

D.having not enough information provided