A business presentation is typically carried out using audio/visual presentation material, such as projectors and statistical documents created with presentation software.

If the basic elements are covered in a company presentation, it definitely means this presentation is an effective one.

When preparing for a presentation you should clarify the purpose of your presentation and also the following:

Being nervous in a presentation ______and______. A: will ruin the presentation B: is natural C: should be avoided D: can improve your performance

【单选题】设有两个数列 { a n } , { b n } 且 lim n → ∞ ( a n − b n ) = 0 ,则 A. { a n } " role="presentation"> { a n } , { b n } " role="presentation"> { b n } 必都收敛，且极限相等 B. { a n } " role="presentation"> { a n } , { b n } " role="presentation"> { b n } 必都收敛，但极限未必相等 C. { a n } " role="presentation"> { a n } 收敛,而 { b n } " role="presentation"> { b n } 发散 D. { a n } " role="presentation"> { a n } 和 { b n } " role="presentation"> { b n } 可能都发散，也可能都收敛