Was the correct and complete breakfast order served within 10 minutes of order, unless the waiter informed the agent of an expected delay (i. e. due to longer preparation times)?
除非客人被告知预期拖延(如：由于较长时间的准备)，正确完整的早餐点单可以在10分钟内完成吗？
2
The preparation of XSF-1 Fabric Finishing Agent was studied.
研究了XSF—1织物整理剂的制备方法。
3
The preparation of reactive cationic rosin sizing agent and its sizing mechanism were discussed in this paper.