结合建筑应用文中“投标书”与“招标书”的写作，介绍了两种实用文体的特点、制作和格式。

Combined with the writing of "tender" and "bid document" in construction application file in this paper the characteristic, writing and style of two practical writing styles are introduced.

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授权证明应按书面委托书的格式提交，并应附于投标书中。

Proof of authorization shall be furnished in the form of a written Power of Attorney which shall accompany the tender.

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