连续观测方式的定量库存控制，（）是固定的，（）是变动的。
参考答案：订货数量（批量）、订货时间
The Da Vinci Code is _____ that many people go to see it. [ ]
A. too interesting
B. so a interesting film
C. such an interesting film
D. such interesting a film
属于文件（属第四层次文件）
