专卖执法人员获取零售市场有价值信息的渠道有哪些？
参考答案：
①系统数据提取；
②巡查走访采集；
③投诉举报受理；
④其他信息来源。
用所给动词的适当形式填空
1. I____ (live) in a quiet village with my grandparents.
2. Look at the birds____ (sing) in the tree. How beautifully they sing!
3. Everyone in our class ____(get)a new book.
4. This boy is very naughty. He often _ _ (lie) on the floor.
5. Thank you for ____ (tell) me about that.
人工换梁是在（）设置移梁装置，通过滑车组用人力推动绞车或绞磨牵引而进行的换梁方法。
