立卷之前，通常应（）
A.编制分类方案
B.填写卷内备考表
C.填写卷内文件目录
D.填写案卷目录
参考答案：A
was born being good at all things. You can do well in things through hard work. As an English learner, you can’t be excellent without enough practice.
A. Everybody B. Somebody C. Nobody
某项目预计年销售收入为3000万元，年总成本2500万元(其中利息支出为500万元)，总投资4000万元，该项目的总投资收益率为______。
A．20%
B．25%
C．30%
D．40%
