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【多选题】
头孢噻肟钠的结构特点包括A.
是由β-内酰胺环和氢化噻嗪环并合而成
B.
含有氧哌嗪的结构
C.
含有四氮唑结构
D.
含有2-氨基噻唑结构
E.
含有噻吩结构
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反馈参考答案：
举一反三
【简答题】按任务的重复程度和工作地的专业化程度划分生产类型，可以分为大量生产、成批生产、单件小批生产，以下选项中，属于单件小批生产特点的是（ ）。
【单选题】What are not the tips for bargaining?
A.
Find out what locals pay.
B.
Start 50% lower than the first offer.
C.
Don't walk away from an item if you love it.
D.
pretend that you are not keen the item.
【单选题】What are not the tips for bargaining?
A.
Find out what locals pay.
B.
Start 50% lower than the first offer.
C.
Don't walk away from an item if you love it.
【单选题】What does the author argue for in the passage?
A.
Restaurants should calculate the tips for customers.
B.
Customers should pay more tips to help improve service.
C.
Waiters deserve better than just relying on tips for a living.
D.
Waiters should be paid by employers instead of customers.
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