# 2023知到答案 Data- Model and Decision 完整智慧树网课章节测试答案

Title

## 第一章 单元测试

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.

A:less than
B:equal to
C:more than

2、单选题：
In general, an increase in variable costs will（ ）the break-even point, all other things held constant.

A:decrease
B:not change
C: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（ ）?

A:Decision analysis
B:Transportation and assignment
C:Project management (like CPM/PERT)
D: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. ( ）

A:错
B:对

## 第二章 单元测试

1、单选题：
If the graphical method is used to solve the linear programming problem, the number of decision variables should be ( ).

A:2
B:≤5
C:No limitation
D:≥3

2、单选题：
In the linear programming model, ( ) restrict the decision variables to zero or positive values.

A:The features of variables
B:Objective function
C:Resource requirements
D:Nonnegativity constraints

3、单选题：
If the optimal solution of the linear programming problem is reached at two vertices of feasible domain at the same time, then the optimal solution has ( ).

A:A straight line connecting two vertices
B:It’s impossible
C:A line segment connecting two vertices
D:Two solutions

4、单选题：
The following features of standard form of Linear programming are correct（ ）.

A:The decision variables are nonnegative
B:The decision variables are not equal to zero
C:None of above is true
D:There is no limit to the symbol of decision variables

5、判断题：
The optimal solution of the linear programming problem must be the feasible solution. （ ）

A:错
B:对 