商务英语BEC高级写作中，报价与订单函是非常重要的一部分。以下是一些建议和范文，希望对您有所帮助。

一、报价函写作要点：
1. 开头礼貌地问候对方，表明询盘目的。
2. 列出需要询价的商品或服务，并注明数量。
3. 请求对方提供详细的产品信息、技术参数和最低报价。
4. 说明报价的有效期，一般应至少为三个月。
5. 提出交货时间要求，确保货物能在预定时间内到达。
6. 询问对方能否满足交货期要求。
7. 了解售后服务和保修政策。

报价函范文：

Dear Sirs,

We wish to buy the following items of electronics equipment for our language laboratory. We should be grateful if you would kindly quote your lowest rates for these items, giving full particulars and technical details. The quantity we propose to buy is mentioned against each item. Since the processing of the purchase proposal takes quite some time, it would be helpful if you could quote rates which may remain valid for at least three months.

We want to set up the lab by the end of June so that it can function when the university reopens in July. We would, therefore, like the equipment to be delivered to us latest by June 15. Please let us know whether you will be able to arrange the supply by this date.

Please let us also know the guarantee period and any after-sales facility offered by you.

We look forward to hearing from you soon.

Yours faithfully,
R.N.Vaish
Purchase Officer

二、订单函写作要点：
1. 表明订单目的，确认购买意向。
2. 根据对方报价，明确所需商品或服务的数量、价格等。
3. 确认交货时间、付款方式和售后服务。
4. 礼貌地结束，表达期待合作。

订单函范文：

Dear Sirs,

Thank you for your quotation dated [Date]. We are pleased to place an order for the following items based on your offer:

[Item 1, Quantity, Price]
[Item 2, Quantity, Price]
...

We would like to confirm that the delivery date is [Date], and we request that the goods be sent to our address: [Address].

We will make the payment by crossed cheque drawn on the City Bank within 15 days of the receipt of the equipment.

Please acknowledge the receipt of this order and confirm the details.

We look forward to a successful cooperation.

Yours faithfully,
[Your Name]
[Your Position]

希望以上内容能帮助您更好地理解和掌握商务英语BEC高级写作中报价与订单函的写作技巧。祝您考试顺利！