【判断题】【消耗次数:1】
工作中转动的轴为转轴。
正确
错误
参考答案:
复制
纠错
相关题目
【判断题】 工作中转动的轴为转轴
①  正确
②  错误
【判断题】 数控机床若有旋转轴时,旋转轴为A是指绕Z轴旋转的轴。
①  正确
②  错误
【判断题】 两轴式变速器输入轴的转动方向与输出轴的转动方向相反
①  正确
②  错误
【单选题】 下列各轴中,属于转轴的是()
①  减速器中的齿轮轴
②  自行车的前、后轴
③  铁路机车的轮轴
④  滑轮轴
【多选题】 出纳工作中常见的记账错误( )。
①  会计原理运用错误
②  会计原则运用错误
③  计算错误
④  记账错误
【判断题】 通过连轴器联接的两轴可在工作中随时分离。
①  正确
②  错误
【单选题】 质心在转轴上的匀角速度定轴转动刚体,其惯性力系向转轴上的某点简化的结果可能是:
①  零力系
②  一个力偶或零力系
③  一个力
④  一个力螺旋
【判断题】 通过离合器联接的两轴可在工作中随时分离。
①  正确
②  错误
【单选题】 刚体作定轴转动时,其上某点A到转轴的距离为R。为求出刚体上任一点B(到转轴的距离已知),在某瞬时的加速度的大小。以下四组条件,哪一个是不充分的?
①  已知点A的法向加速度和该点B的速度。
②  已知点A的切向加速度和法向加速度。
③  已知点A的速度和该点B的全加速度的方向。
④  已知点A的法向加速度和该点B的全加速度的方向。
【单选题】 关于设计传动轴时的正确概念为:()。
①  要使传动轴最高转速尽可能接近0.7倍临界转速;
②  需要临界转速较高,传动轴实心;
③  要使临界转速较低,传动轴较短;
④  要使传动轴最高转速远远低于临界转速,传动轴较短.
随机题目
【单选题】 What are very commonly used teaching procedures and stages?
①  Presentation, practice and production
②  Pre-reading, while-reading and post-reading
③  Mechanical practice and meaningful practice
④  Both A and B.
【单选题】 What are the guidelines for writing teaching aims in a lesson plan?
①  Clear, brief
②  Specific, students-oriented
③  Specific, teacher-oriented
④  Both A and B.
【单选题】 What is discourse competence concerned with?
①  Appropriate use of the language in social context
②  Ability to create coherent written text or conversation and the ability to understand them
③  Strategies one employs when there is communication breakdown due to lack of resources
④  Knowledge of language itself, its form and meaning.
【单选题】 What is strategic competence concerned with?
①  Appropriate use of the language in social context
②  Ability to create coherent written text or conversation and the ability to understand them
③  Strategies one employs when there is communication breakdown due to lack of resources
④  Knowledge of language itself, its form and meaning.
【单选题】 What are the five components of communicative competence?
①  Linguistic competence, pragmatic competence, discourse competence, strategic competence and fluency
②  Linguistic competence, pragmatic competence, discourse competence, strategic competence and accuracy
③  grammar competence, pragmatic competence, discourse competence, strategic competence and fluency
④  grammar competence, pragmatic competence, discourse competence, strategic competence and accuracy.
【单选题】 What are the principles of communicative language teaching?
①  Communication principle, task principle and meaningful principle
②  Communication principle, accuracy principle and meaningful principle
③  Communication principle, fluency principle and meaningful principle
④  Communication principle, task principle and purpose principle.
【单选题】 What are the listening and speaking activities in traditional pedagogy?
①  A. Listen to texts either read by the teacher or pre-recorded on the tape; repeat what is heard
②  Answer the questions according to what is heard; produce responses based on given clues
③  Retell what is heard
④  All of the above.
【单选题】 What is fluency competence concerned with?
①  Appropriate use of the language in social context
②  Ability to link units of speech together with facility and without strain or inappropriate slowness or undue hesitation
③  Strategies one employs when there is communication breakdown due to lack of resources
④  Knowledge of language itself, its form and meaning.
【单选题】 What is linguistic competence concerned with?
①  Appropriate use of the language in social context
②  Ability to create coherent written text or conversation and the ability to understand them
③  Strategies one employs when there is communication breakdown due to lack of resources
④  Knowledge of language itself, its form and meaning.
【单选题】 What is the possible solution to bridge the gap between classroom language teaching and real-life language use?
①  Task-based teaching and learning
②  Communicative language teaching
③  Presentation, practice and production
④  Engage
⑤  study
⑥  activate.