What-if analysis is a very powerful and simple tool to test the effects of different assumptions in a spreadsheet.
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In a database, primary keys are often used to link tables.
A. 对
B. 错
Worksheets are only used for a limited types of applications.
A. 对
B. 错
Presentation graphics software is an excellent tool to communicate a message and to persuade people.
A. 对
B. 错
Desktop publishing programs focus on page design and layout and provide greater flexibility for this than word processors.
A. 对
B. 错