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【简答题】
His early efforts to make cars safer A. He talked about _____, and how bad _____ caused the deaths of so many people each year at parties. B. After he graduated from Harvard, he published an article entitled “_____.” C. Later, he made a big attack on _____ and showed _____ in car accidents were because of _____. D. In 1966, because of Nader’s work, _____to make cars safer.
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【简答题】The teacher who did the most to encourage me was, as it happens, my aunt. She was Myrtle C. Manigault, the wife of my mother’s brother Bill. She taught me in second grade at all-black Summer School in...
【判断题】采用垂直下刀时,下刀切入速度必须要小,因为下刀速度过快,会在切入的瞬间产生剧烈的冲击,导致刀具加速磨损,甚至崩刃损坏。为减小冲击,可采用螺旋下刀,但螺旋下刀编程轨迹比较复杂,在手工编程使用较少,多在自动编程中使用。
A.
正确
B.
错误
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