题目内容
虽然淘宝有多种打造爆款的方法，但打造爆款在短期内应专攻一种方法。
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Carol: What’s up, Daniel? You look_______ today.Daniel: I got a “C” in the English exam again. ________________I should do?Carol: Well, English is a “paper tiger”. Its natural enemy is practice.Daniel: I did _________a lot, like doing lots of grammar exercises every day.Carol: Well, I __________that every day you do some reading aloud, and try to speak more. That will help you improve your feel for the language, which is very important for____________________.Daniel: I see. I’ll give it a try.
GTO能通过门级控制关断的原因有哪些？（）
GTO属于全控性器件。（）
什么是椎管内麻醉？请简述其分类。
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