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1、下列诸因素中,哪个是造成45钢淬火硬度偏低的主要原因-上学吧找答...
答: 下列诸因素中,哪个是造成45钢淬火硬度偏低的主要原因A.加强温度低于Ac3B.加热温度高于AC3C.保温时间过长D.冷却速度大于VK
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答: 淬火临界冷却速度(Vk),淬透性,淬硬性; 第4题 C曲线右移使淬火临界冷却速度(),淬透性()。 第5题 中淬透性调质钢的油淬火临界直径为()mm。 A.40~60 B.60~80 C.80~100 第6题 顶端淬...
![《几何原本》后九卷是-与英国传教士伟列亚力共同翻译的-上学吧找...]()
3、《几何原本》后九卷是-与英国传教士伟列亚力共同翻译的-上学吧找...
答: 白晋与康熙 第11题 ()和传教士烈亚力合作补译了几何原本。 A.刘徽 B.祖冲之 C.徐光启 行业知识普法 更多 > 谢谢您的反馈 您认为本题答案有误,我们将认真、仔细核查,如果您知道正确答案,欢迎您...
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4、VK登陆不进去,出现了WarningUnabletocompleteencryptedauthorization..不知怎么回事,我的VK账号登陆不进去,出现了Warning:Unabletocomplete...-
答:[答案] 提示信息内容: 加密认证失败.这可能是由于你当前使用的系统时间日期设置不正确导致的.请检查你系统的时间日期设置并重新启动浏览器. 建议打开时间设置界面,使用在线校时.
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5、VA、VE和VC的共同作用是-上学吧找答案-上学吧普法考试
答: VK D.钙,磷,铁,镁 E.锌,磷,铁,镁 第3题 ()可促进机体对铁和叶酸的吸收和利用 A.VA B.VE C.VB1 第4题 硒和维生素()搭配,可以起到相乘的效果并节省其用量 A.VC B....
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