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【简答题】
WatchConversation 2 again and complete the sentences. Janet: What’s the matter with Joe today? Andy: No idea. He’s a bit like that sometimes. He gets annoyed with me, but I don’t really know why. Janet: (1)_________________________. How often does he get like this? Andy: Well, I suppose it’s not very often. But sometimes he really (2) ____________________. Janet: Don’t let it get to you. He’s probably got too much work, and he’s stressed. Andy: Well, he should (3) ________________the studio. Anyway, you’re the expert on Dickens, tell me something about him. Janet: Well, Charles Dickens was one of the most popular novelists in 19th-century Britain. Many of his novels first appeared in magazines, in short episodes. Each one had a cliffhanger at the end that made people want to read the next episode. Andy: And was he a Londoner? Janet: (4)________ in Portsmouth but his family moved to London when he was ten years old. Andy : And he (5) in London, didn’t he? Janet: That’s right. He knew the city very well. Andy: Whereabouts in London are his stories set? Janet: Around the Law Courts in the centre of London. He worked as a court reporter and many of the real-life stories he heard in court inspired some of the most famous characters in his novels. Andy: I think some of his stories (6)_________south of the river? Janet: That’s right, especially around Docklands. The thing was...Dickens was a social commentator as much as he was a novelist - his stories describe the hardship, the poverty, and crime which many Londoners experienced in the 19th century. It makes me want to read some Dickens again. Maybe I’ll just go shopping for a copy of Great Expectations. Andy: Anyway, you did me a huge favour. That was a real brainwave to suggest the new biography. Janet: (7)__________, Andy. It wasn’t your fault. Andy: No, it’s OK. (8)_______. Go on, off you go and enjoy your shopping!
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【单选题】我们把需要研究的物体(称为受力物体)从周围的物体(称为施力体)中分离出来,单独画出它的简图,这个步骤叫做取 。
A.
均不正确
B.
分离体
C.
研究对象
D.
研究对象或分离体
【判断题】到目前,数控系统的发展经历了硬件数控、软件数控和通用数控三个阶段。
A.
正确
B.
错误
【判断题】数控系统的发展中经历了采用电子管电路、晶体管电路和小中规模集成电路构成数控系统的时代,这三个时代统称为硬件数控阶段 。
A.
正确
B.
错误
【多选题】火控系统的发展经历了哪几个阶段?
A.
瞄准具的雏形阶段
B.
光学瞄准具阶段
C.
向量瞄准具
D.
机电式指挥仪
E.
数字式指挥仪
F.
现代火指控一体化阶段
【简答题】把( )的图叫做简单图。
【多选题】自动控制系统的发展经历了哪几个阶段( )
A.
20世纪50年代以前是模拟仪表控制系统
B.
直接数字控制系统
C.
70年代中期出现集散控制系统
D.
90代后期现场总线控制系统
【单选题】我们把需要研究的物体(称为受力物体)从周围的物体(称为施力体)中分离出来,单独画出它的简图,这个步骤叫做取 。
A.
研究对象
B.
分离体
C.
研究对象或分离体
D.
均不正确
【简答题】紫外吸收光谱最大吸收值所对应的波长称为________;曲线的谷所对应的波长称为________;峰旁边一个小的曲折称为________;在吸收波长最短的一端,吸收相当大但不成峰形的部分称为________。整个吸收光的________、________和________是鉴定化合物的标志。
【单选题】数控系统经历了( )个阶段和( )代的发展变化。
A.
一,三
B.
两,四
C.
一,四
D.
两,六
【简答题】紫外吸收光谱最大吸收值所对应的波长称为______;曲线的谷所对应的波长称为______;峰旁边一个小的曲折称为______;在吸收波长最短的一端,吸收相当大但不成峰形的部分称为______。整个吸收光的______、______和______是鉴定化合物的标志。
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