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【简答题】
在如图 F.4 所示放大电路中,用直流电压表测量集电极对地电压和负载电阻 R L 上的电压是否一样?用示波器观察集电极对地的交流电压波形与集电极电阻 R C 和负载电阻 R L 上的交流电压波形是否一样?为什么?
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【单选题】听力原文：W My car doesn't always start in the morning and it often makes me late for work. I think I'd better buy a new car. M Gina, you should go to Jimmy's Garage. I take my car there all the time. They...
A.
The woman's car is making noise.
B.
The woman's car engine needs to be fixed.
C.
The woman locked her keys in her car.
D.
The woman's car has a flat tire.
【简答题】根据句意选词填空。 worried upset stressed lonely ( 1 ) I’m Lucy, a middle school student. I am doing badly in my lessons. I’m . ( 2 ) I’m Sara, a secretary. I need to deal with too many things. I of...
【简答题】编写一段程序,运行时向用户提问 “你考了多少分?( 0 ~ 100 )”,接受输入后判断其等级并显示出来。判断依据如下: 优( 90 ~ 100 )、良( 80 ~ 89 )、中( 60 ~ 79)和差(0~59) static void Main(string[] args) { Console.WriteLine(" 请输入考分 (0-100"); string x = Console .Re...
【简答题】I travel a lot in my work, and what I dislike about my job is eating alone. It always makes me feel lonely to see others laughing and talking. So, room service for several nights was a better choice f...
【单选题】以下哪一项 不是 “近代化学之夫” 拉瓦锡 提出的研究成果?
A.
物质不灭定律
B.
提出“元素”的定义
C.
整理元素周期表
D.
指出动物的呼吸实际上是一种缓慢氧化
【简答题】编写一段程序,运行时向用户提问 “你考了多少分?( 0 ~ 100 )”,接受输入后判断其等级并显示出来。判断依据如下: 优( 90 ~ 100 )、良( 80 ~ 89 )、中( 60 ~ 79)和差(0~59) static void Main(string[] args) { Console.WriteLine(" 请输入考分 (0-100"); string x = Console .Re...
【简答题】编写一段程序,运行时向用户提问 “你考了多少分?( 0 ~ 100 )”,接受输入后判断其等级并显示出来。判断依据如下: 优( 90 ~ 100 )、良( 80 ~ 89 )、中( 60 ~ 79)和差(0~59) static void Main(string[] args) { Console.WriteLine(" 请输入考分 (0-100"); string x = Console .Re...
【简答题】Nick: I'm (1) ______ angry about this rumor. I don't want to talk to anyone. Talia: But you need to talk to prove your innocence. Not(2) ______ makes you look guilty. Nick: I wonder if you (3) ______ ...
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