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【填空题】
豆腐干地方梵蒂冈热的()
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答案
非官方的地方
解析
暂无解析
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豆腐干沙发沙发地方梵蒂冈热的()
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撒大苏打.阿达士 大夫山豆根豆腐干阿斯顿..
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啊实打实...................
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其二委屈饿的........................
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1111___
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【多选题】
1、分析放大电路的基本方法有___。
A. 图解法
B. 估算法
C. 微变等效电路法
D. 变量法
【多选题】
2、通常根据矫顽力的大小把铁磁材料分成___。
A. 软磁材料
B. 硬磁材料
C. 矩磁材料
D. 中性材料
【多选题】
3、下列属于磁路基本定律有___。
A. 欧姆定律
B. 基尔霍夫定律
C. 叠加定律
D. 楞次定律
【多选题】
4、电磁铁的形式很多,但基本组成部分相同,一般由___组成。
A. 励磁线圈
B. 铁芯
C. 衔铁
D. 绕组
【多选题】
5、集成电路按照功能可分为___。
A. 模拟集成电路
B. 数字集成电路
C. 半导体集成电路
D. 双极型集成电路
【多选题】
6、集成电路按照导电类型可分为___。
A. 单极型
B. 双极型
C. 兼容型
D. 半导体集成电路
【多选题】
7、集成电路按照制造工艺可分为___。
A. 半导体集成电路
B. 薄膜集成电路
C. 数字集成电路
D. 厚膜集成电路
【多选题】
8、下列是集成电路封装类型的有___。
A. 塑料扁平
B. 陶瓷双列直插
C. 陶瓷扁平
D. 金属圆形
E. 塑料双列直插
【多选题】
9、集成运算放大器可分为___。
A. 普通型
B. 特殊型
C. 通用型
D. 兼容型
【多选题】
10、特殊型集成运算放大器可分为___等。
A. 高输入阻抗型
B. 高精度型
C. 宽带型
D. 低功耗型
E. 高速型
【多选题】
11、集成运算放大器由___组成。
A. 输入级
B. 中间级
C. 输出级
D. 偏置电路
【多选题】
12、下列指标中属于集成运算放大器主要技术指标的有___。
A. 输入失调电压
B. 差模输入电阻
C. 最大输出电压
D. 输入失调电流
【多选题】
13、下列属于晶闸管主要参数的有___。
A. 正向重复峰值电压
B. 正向平均电流
C. 维持电流
D. 正向平均管压降
E. 反向重复峰值电压
【多选题】
14、高压电动机一般应装设哪些保护___。
A. 电流速断保护
B. 纵联差动保护
C. 过负荷保护
D. 单相接地保护
E. 低电压保护
【多选题】
15、下列参数中属于TTL与非门电路的主要技术参数的有___。
A. 输出高电平
B. 开门电平
C. 空载损耗
D. 输入短路电流
E. 差模输入电阻
【多选题】
16、由___组成的集成电路简称CMOS电路。
A. 金属
B. 氧化物
C. 半导体场效应管
D. 磁性物
【多选题】
17、下列属于集成触发器类型的有___。
A. T触发器
B. JK触发器
C. D触发器
D. RS触发器
【多选题】
18、电动机的机械特性按硬度分类可分为___。
A. 绝对硬特性
B. 硬特性
C. 软特性
D. 绝对软特性
【多选题】
19、电动机的机械特性按运行条件分类可分为___。
A. 固有特性
B. 人为特性
C. 一般特性
D. 双向特性
【多选题】
20、电动机的运行状态可分为___。
A. 静态
B. 动态
C. 调速状态
D. 过渡过程
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21、直流电动机的调速方法有___。
A. 降低电源电压调速
B. 电枢串电阻调速
C. 减弱磁调速
D. 加大磁调速
【多选题】
22、三项异步电动机的调速方法有___。
A. 改变供电电源的频率
B. 改变定子极对数
C. 改变电动机的转差率
D. 降低电源电压
【多选题】
23、电动机的制动方法有___。
A. 机械制动
B. 电气制动
C. 自由停车
D. 人为制动
【多选题】
立井提升速度图分为___。
A. 罐笼提升
B. 箕斗提升
C. 双钩串车
D. 单购串车
【多选题】
25、可编程控制器一般采用的编程语言有___。
A. 梯形图
B. 语句表
C. 功能图编程
D. 高级编程语言
【多选题】
26、可编程控器中存储器有___。
A. 系统程序存储器
B. 用户程序存储器
C. 备用存储器
D. 读写存储器
【多选题】
27、PLC机在循环扫描工作中每一扫描周期的工作阶段是___。
A. 输入采样阶段
B. 程序监控阶段
C. 程序执行阶段
D. 输出刷新阶段
【多选题】
28、状态转移的组成部分是___。
A. 初始步
B. 中间工作步
C. 终止工作步
D. 有向连线
E. 转换和转换条件
【多选题】
29、状态转移图的基本结构有___。
A. 语句表
B. 单流程
C. 步进梯形图
D. 选择性和并行性流程
E. 跳转与循环流程
【多选题】
30、在PLC的顺序控制中采用步进指令方式变成有何优点___。
A. 方法简单、规律性强
B. 提高编程工作效率、修改程序方便
C. 程序不能修改
D. 功能性强、专用指令多
【多选题】
31、基本逻辑门电路有___。
A. 与门
B. 或门
C. 非门
D. 与非门
【多选题】
32、串联稳压电路包括的环节有___。
A. 整流滤波
B. 取样
C. 基准
D. 放大
E. 调整
【多选题】
33、常用的脉冲信号波形有___。
A. 矩形波
B. 三角波
C. 锯齿波
D. 菱形波
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20.—I’m going back to see my grandparents this weekend. —________. A. It’s very nice of you B. You’d better hurry C. Say goodbye to them D. Give my best wishes to them
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22. —Do you know the boy________ is sitting next to Peter? — Yes. He is Peter’s friend. They are celebrating his ________ birthday. A. who; ninth B. that; ninth C. /; ninth D. which; ninth
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23. It was dark, ______ I couldnt see what was happening. A. or B. though C. but D. so
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24.—You can use MSN to talk with Vivien on the Internet. —I know. But can you tell me ________? A. what I can use it B. when I can use it C. why can I use it D. how can I use it
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25. _______ are you going to the School Uniform Exhibition, Amy ? To learn about different styles of school uniform. A. What B. Where C. Which D. Why
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( ) 26. Where does the writer of "The little Prince" come from? A.England. B.France. C.America. D.China.
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( ) 27. What does the prince do after the fox tells him a secret? A.He cares more about a flower and a sheep. B.He meets many more strange adults on other planets. C.He realizes his love for the rose and he goes back to his planet.   D.He discovers interesting things such as a snake, other roses and a fox
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【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________. A.the adult world B.the planet B -612 C.a rose and a fox D.the adventure of a young prince
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【单选题】
( ) 29. What is the writer's main purpose(目的)in writing this passage?    A.To tell the readers his life story.    B.To tell people what kind of person his father was.    C.To tell the readers what present he got from his father.    D. To let people know how poor he was.
A. A
B. B
C. C
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( ) 30. Why did the father not ask his son not to do this and do that?    A.Because he felt quite confident of his son.    B.Because he was born from a poor family.    C.Because he was a man of few words.    D.Because he didn't want to be much too strict with his son.
A. A
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C. C
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( ) 31. What would someone learn from this passage?    A.How to live by oneself. B.How to stand on one's own feet.    C.What a good father should do. D.What the self-important is like.
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( ) 32. What may be the proper Chinese for the underlined part in the passage?    A.闲暇时光 B.学费 C.精神空虚 D.经济不足
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( ) 33. Why did Natalie Smith pay for the six cars behind her? A. She had seven tickets. B. She hoped to please others. C. She knew the car drivers well. D. She wanted to show kindness.
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( ) 34. Judy Foreman copied down the phrase because she ___ . A. thought it was beautifully written B. wanted to know what it really meant C. decided to write it on a warehouse wall D. wanted her husband to put it up in the classroom
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( ) 35. Who came up with the phrase according to the passage? A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
A. A
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( ) 36. What can we infer from the last paragraph? A. People should practice random kindness to those in need. B. People who receive kindness are likely to offer it to others. C. People should practice random kindness to strangers they meet. D. People who receive kindness are likely to pay it back to the giver.
A. A
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( ) 37.The greatest river for navigation is ___________. A. the Nile B. the Amazon C. the Mekong D. the Mississippi
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( ) 38. From a dam, people can use the water for ___________. A. keeping the rivers clean B. only making electricity C. irrigation and making electricity D. washing clothes
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( ) 39. The water in the river is polluted because of _____________. A. people's drinking water too much B. people's swimming in the river too much C. chemicals and other materials D. people's building a dam across a river
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( ) 40. The best title of the passage is ___________. A. Rivers in Cities B. The importance of Rivers C. Transportation D. Natural Resources
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