1、单选题：
The purpose of break-even analysis is to determine the number of units of a product to sell or produce that will equate total revenue with total cost. At the break-even point, the profit is ( ) zero.
选项：
A:less than
B:equal to
C:more than
答案: 【equal to】

2、单选题：
In general, an increase in variable costs will（ ）the break-even point, all other things held constant.
选项：
A:decrease
B:not change
C:increase
答案: 【increase】

3、多选题：
It’s important to make full use of techniques in management science process, which techniques are commonly used for the purpose of decision-making（ ）?
选项：
A:Decision analysis
B:Transportation and assignment
C:Project management (like CPM/PERT)
D:Linear programming models
答案: 【Decision analysis;
Transportation and assignment;
Project management (like CPM/PERT);
Linear programming models】

4、判断题：
Manufacturing companies develop linear programming models to help decide how many units of different products they should produce to maximize their profit (or minimize their cost), given scarce resources such as capital, labor, and facilities. ( ）
选项：
A:错
B:对
答案: 【对】