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【单选题】
Theirs is a modern love drama. They met on the Internet and fell deeply in love with each other. They shared secrets, memories, feelings—even though they had never laid eyes on each other. And now, the very technology that had brought them together was tearing them apart."Kevin" is a pleasing fellow—quick with a smile, trustworthy. A security guard for a hospital in northern Idaho, he keeps emergency room patients company and walks nurses to their cars at night. He remembers the first day he went to the Internet. It was August 1995, and the computer was in the hospital library. It wasn't long before he was spending most of his free time in front of the screen.It was purely by accident, Kevin says, that he discovered online pornography (色情内容). First he looked out of curiosity. "Each time I thought I had seen it all," he says, "some new sex practice popped up. Eventually, the online sex world came to take the place of any real-world contact with women. "I can be a little bit shy," he says, "and this was an alternative that kept me from feeling lonely."Then came a message from "Marie," a young mother of three looking for company on an Internet singles site. Kevin fired off an immediate response, and the two began a dialogue that would last two months before he made the 50-mile drive to meet her. A few months later, they were married.What Marie loved about Kevin was his kindness, his interest in her kids. What she didn't know was that every time she was reading one of Kevin's love emails, he was at the other end of the connection looking secretly at pornography sites. "I knew he was always online," Marie says. "But I thought that it was just because he was interested in meeting new people."Whenever Kevin was home, he was online, with the door closed. A few times, he called her in to look at an especially "wild" site. She was a little bothered by it but didn't worry until he turned away from her in bed. "Have you been looking again?" she would cry.By January, Kevin knew he had a serious problem. He promised that he would never use the computer at home. But there was still the machine at the hospital. Every night, he would use his master key to get into the closed library and favor his curiosity as never before. Sometimes, for his entire eight-hour work time, he would sit in front of the screen. When his bosses asked him to look in on the library, where some "unusual" computer activity had been noticed, he stopped using the computer for a month, and then headed straight back to the same place.This time, though, he walked into a trick. Earlier this summer, the hospital started using cameras and computer programs that recorded Kevin's every mouse(鼠标) click. On June 27, his bosses confronted him and took him to the police station nearby. He was kept in the station for three days. Now Kevin lives under the continual watch of his wife and his boss.3. At first Kevin was a man of ________.
A.
honesty
B.
dishonesty
C.
lies
D.
sympathy
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【简答题】把一个圆柱的侧面展开,得到一个长方形.这个长方形的长等于圆柱底面的______,宽等于圆柱的______.圆柱的体积=______×______.
【单选题】接触器线圈通电时( )。
A.
常开触点闭合、常闭触点闭合
B.
常开触点闭合、常闭触点断开
C.
常开触点断开合、常闭触点闭合
D.
触点不动作
【简答题】把圆柱的侧面沿高展开,可以得到一个( ),长方形的长等于圆柱的( ),长方形的宽等于圆柱的( )。
【单选题】长方形的长等于圆柱的(),宽等于圆柱的()
A.
底面周长     高
B.
底面直径   高
C.
底面半径    高
【单选题】当接触器线圈通电时( )。
A.
常开触头先闭合,常闭触头再断开
B.
常开触头先断开,常闭触头再闭合
C.
常闭触头先闭合,常开触头再断开
D.
常闭触头先断开,常开触头再闭合
【判断题】常开触点是指当接触器线圈通电时,接触器的触点处于断开状态。()
A.
正确
B.
错误
【判断题】在基本RS触发器中,当S D =0、R D =1时,触发器输出状态为Q=1。
A.
正确
B.
错误
【单选题】我国养老保险组成的三大支柱的情况是
A.
以基本养老保险为主
B.
以企业补充养老保险为主
C.
以商业养老保险为主
D.
以个人储蓄养老保险为主
E.
三大结构均衡发展
【多选题】我国养老保险的三支柱是指
A.
社会养老保险
B.
企业年金与职业年金
C.
个人购买的商业养老保险
D.
社会医疗保险
【简答题】设计一个用 PLC 控制的钻床的控制系统。 (1) 钻床用来加工圆盘状零件上均匀分布的 6 个孔。操作人员将工件放好后,按下启动按钮,工作被夹紧,夹紧后压力继电器为 ON ,此时两个钻头同时开始向下进给加工。大钻头到设定的深度( SQ1 )时,钻头上升,升到设定的起始位置( SQ2 )时,停止上升;小钻头钻到设定深度 (SQ3) 时,钻头上升,升到设定的起始位置( SQ4 )时,停止上升。...
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