局麻药据化学结构分类分以下哪类（） A.酯类 B.芳香类 C.胺基类 D.酰胺类 E 发布时间：2018-02-27 09:53 │ 来源：www.tikuol.com 题型：单项选择题 问题： 局麻药据化学结构分类分以下哪类（）A.酯类B.芳香类C.胺基类D.酰胺类E.以上都是
题型：单项选择题 从方框中选择适当的副词，每个词只能用一次。often why away politely outsidetoo how always suddenly heavily1. I _____________ go to school by bike.2. Tony spoke _____________ to his grandma.3. The cleaners are moving the rubbish _____________.4. John is _____________ late for school, and this made his teacher very angry.5. _____________ are you unhappy? Because I can't go on holiday with my family.6. The children are playing games _____________.7. Henry is _____________ young to drive a car.8. _____________ do you like the dishes? Very good.9. The driver braked (刹车) _____________ when he saw a dog ahead.10. It is raining _____________. 查看答案
题型：单项选择题 图示为共发射极单管电压放大电路，估算静态点iB、IC、ICE分别为（）。A．57μA，2.8mA，3.5VB．57μA，2.8mA，8VC．57μA，4mA，0VD．30μA，2.8mA，3.5V 查看答案
