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问题描述：

[多选] 7级增程系统包括哪些？
A．TTFAR电机 B．能量回收控制器 C．TTFAR石墨烯电池 D．电能检测仪表 E．低滚阻轮胎 F．降电阻电缆
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随机题目

A Wang Xiaojun， a 12-year-old boy， lives in the countryside in Hubei Province． Today is his birthday． His parents have prepared a nice dinner for him， but the boy says， “I won"t have dinner because today is over after dinner and my parents are leaving for Shenzhen tomorrow． I don"t want to let them go． ” It is the first birthday that Wang Xiaojun has spent with his parents in three years． In the past three years， his parents have worked hard in Shenzhen to make money． They haven"t seen their son for three years． Tomorrow they will have to leave for Shenzhen again． Wang is not the only left-behind child（留守儿童）．In the countryside of China， there are more than 20 million children staying at home without their parents． Left-behind children face a lot of problems． Most of them stay with their grandparents． They get less care from their parents． They often feel lonely． Some of them don"t study well because their parents can"t help them with their lessons． The Chinese government cares about the left-behind children very much and is trying to solve their problems now．1． Why do the parents prepare a nice dinner for their son？
B Work is very important to Americans， and most of them （）their work． Americans put their work first in life． They can learn （）a person is great by talking about his job． So it"s （）to hear people ask each other what they“do” for a living． Today， Americans love to work and always want to get more （）their work． Most Americans want their jobs to be （），wonderful and even challenging（有挑战性的）． Americans work long hours． Most people work about forty hours a week， （）some even work much longer hours-more than sixty hours a week． Most Americans are too busy with their work to （）about their families． In fact， many Americans have （）more pressure（压力）from their work and fewer vacations． Sometimes they have to do （）work at home． In America， some jobs are fun and meaningful， but some are not． To （）better and become happier from boring jobs， many Americans spend time on vacations， hobbies， sports and all kinds of parties when they are free．1．
关于工艺卫生的说法正确的是（）
下面关于导致印刷偏移的原因哪个不正确（）
丝网操作过程中，以下哪几项操作属于符合规定的作业现象（）（多选）
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