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【单选题】
“敕勒川，阴山下。天似穹庐，笼盖四野。天苍苍，野茫茫，风吹草低见牛羊。”这首民歌出自__________。A.
汉朝
B.
晋朝
C.
北朝
D.
南朝
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反馈参考答案：
举一反三
【单选题】How to keep a product presentation short?
A.
Cut out 30% after preparation
B.
Avoid repetition
C.
Cancel the central idea
D.
Don’t use examples
【单选题】How to keep a product presentation short?
A.
Don’t use examples
B.
Avoid repetition
C.
Cancel the central idea
D.
Cut out 30% after preparation
【多选题】Which situations can we make product presentation?
A.
to the management
B.
to the target customers
C.
to the salesman
D.
to the investors
【简答题】由方程【图片】所确定的隐函数【图片】对y的一阶偏导数【图片】=（ ）
【单选题】How to keep a product presentation short?
A.
Avoid repetition
B.
Cut out 30% after preparation
C.
Cancel the central idea
D.
Don’t use examples
【多选题】What are included in a product presentation?
A.
Introduction
B.
product description
C.
Best selling points
D.
Closing argument
E.
Employees
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