【单选题】【消耗次数:1】
定轴轮系的传动比大小与轮系中的惰轮的齿数____。
成正比
成反比
有关
无关
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相关题目
【单选题】 定轴轮系的传动比大小与惰轮的齿数()。
①  A.有关
②  B.无关
③  C.成正比
④  D.成反比
【判断题】 轮系中惰轮不仅改变传动比的大小而且还影响传动方向。
①  正确
②  错误
【判断题】 定轴轮系的传动比等于始末两端齿轮齿数之反比。
①  正确
②  错误
【单选题】 轮系的传动比,是指轮系中首轮与末轮的()或()之比。
①  A.传动角、压力角
②  B.中心距、位移
③  C.加速度、位移
④  D.角速度、转速
【判断题】 惰轮不但能改变轮系齿轮传动方向而且能改变传动比。
①  正确
②  错误
【判断题】 平面定轴轮系的传动比有正负。
①  正确
②  错误
【多选题】 轮系的传动比,是指轮系中首轮与末轮的()或()之比。
①  A.线速度
②  B.角速度
③  C.转速
④  D.功率
【单选题】 定轴轮系的传动比等于所有()齿数的连乘积与所有主动轮齿数的连乘积之比。
①  A.从动轮
②  B.主动轮
③  C.惰轮
④  D.齿轮
【单选题】 周转轮系的传动比计算应用了转化轮系的概念。对应周转轮系的转化轮系乃是()。
①  定轴轮系
②  行星轮系
③  混合轮系
④  差动轮系
【单选题】 对于平面定轴轮系来说,其传动比的正、负取决于()。
①  A.模数的大小
②  B.轴线的几何位置
③  C.外啮合的次数
④  D.首轮和末轮的齿数
随机题目
【单选题】 Modern machinery _______ been installed in this newly-built factory.
①  has
②  have
③  is
④  are
【单选题】 After failing the exams three times, Jack realized that he’d never ____in English.
①  see to it
②  attain it
③  catch it
④  make it
【单选题】 Before the final examination, some students have shown _______ of tension. They even have trouble in sleeping.
①  anxiety
②  marks
③  remarks
④  signs
【单选题】 Wow! This is a marvelous room! I’ve never known you’re so artistic._________
①  Great, I am very art-conscious.
②  Don’t mention it.
③  Thanks for your compliments.
④  It’s fine.
【单选题】 Sorry, I can’t find the books you asked for.____________
①  Don’t mention it.
②  It’s your fault.
③  Thanks anyway.
④  I won’t forgive you.
【单选题】 The atmosphere _______ certain gases mixed together in definite proportions.
①  composes of
②  is made up
③  consists of
④  makes up of
【单选题】 Do you mind my smoking here?___________
①  No, thanks.
②  Yes, I do.
③  Yes, I’d rather not.
④  Good idea.
【单选题】 Every time when I go back to my hometown, I usually spend two days ____ of my relatives.
①  going the rounds of
②  rounding up
③  making the rounds of
④  rounding on
【单选题】 he children  ()  many times not to play with fire.
①  told
②  have told
③  have been told
④  are being told
【单选题】 _______ girl dressed _______ black is her sister Rose.
①  A; in
②  A; on
③  The; on
④  The; in