【单选题】【消耗次数:1】
在机械加工中,由机床、夹具、刀具、工件等组成的系统,称为工艺系统,该说法( )
正确
错误
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相关题目
【判断题】 在机械加工中,由机床、夹具、刀具、工件等组成的系统,称为工件系统,该说法( )
①  正确
②  错误
【判断题】 机械加工工艺系统由工件、刀具、夹具和机床组成。
①  正确
②  错误
【判断题】 工件在加工前,使其在机床上或夹具中获得正确而固定位置的过程称为安装。
①  正确
②  错误
【单选题】 在绘制刀具布置图时,要正确选择换刀点,以避免换刀时刀具与机床、工件及夹具发生碰撞现象。该说法( )
①  正确
②  错误
【单选题】 在机械加工过程中,工艺系统经常会发生振动,给加工过程带来很多不利的影响,该说法( )
①  正确
②  错误
【单选题】 切削用量应根据工件材料、硬度、刀具材料及机床等因素来考虑。该说法( )
①  正确
②  错误
【单选题】 先将工件在机床或夹具中定位,调整好刀具与定位元件的相对位置,并在一批零件的加工过程中保持该位置不变,以保证工件被加工尺寸的方法称为()。
①  调整法
②  试切法
③  自动控制法
④  定尺寸刀具法
【判断题】 工件系统中凡是能直接引起加工误差的因素都成为原始误差,该说法( )
①  正确
②  错误
【单选题】 机械加工工艺系统的内部热源主要有()。
①  人体辐射
②  部件摩擦
③  日光照射
④  空气对流
【单选题】 用磨料磨具对工件进行磨削加工的机床称为( )
①  插削机床
②  拉削机床
③  磨削机床
随机题目
【单选题】 In his masterpiece The Portrait of A Lady, Henry James _________.
①  incarnates the clash between the Old World and the New in the life journey of an American girl in a European cultural environment
②  tells a story about a young and innocent American confronting the complexity of the European life as well as the American society
③  describes a young American girl who gets “killed” by the winter in Rome
④  tells about some Europeans who learn with difficulty to adapt themselves to the American life
【单选题】 At the middle of 19th century, America witnessed a cultural flowering which is called “_____”.
①  the English Renaissance
②  the Second Renaissance
③  the American Renaissance
④  the Salem Renaissance
【单选题】 In Dreiser’s Sister Carrie, which of the following statements is NOT true about the characters in the story?
①  At the end of the story, Hurstwood’sfamily are enjoying a happy life without him.
②  Being unable to make a decent living, Hurstwood at last commits suicide.
③  In spite of her success as a famous actress Carrie does not feel happy.
④  Carrie becomes rich and helps Hurstwood out of his difficulty.
【单选题】 Which of the following is not written by Henry James?
①  Daisy Miller
②  The Wings of the Dove
③  The American
④  Self-Reliance
【单选题】 Stylistically, Henry James’ fiction is characterized by ________.
①  highly refined language
②  ordinary American speech
③  short, clear sentences
④  abundance of local images
【单选题】 The first American writer of local color to achieve wide popularity was?____.
①  Bret Harte
②  Mark Twain
③  Henry James
④  William Dean Howells
【单选题】 Mark Twain, one of the greatest 19th century American writers, is well known for his ______.
①  international theme
②  waste-land imagery
③  local colorism
④  symbolism
【单选题】 Who exerts the single most important influence on literary naturalism, of which Theodore Dreiser and Jack London are among the best representative writers?
①  Freud
②  Darwin
③  W. D. Howells
④  Emerson
【单选题】 _____ had an evident influence on naturalism. It seemed to stress the animality of man, to suggest that he was dominated by the irresistible forces of evolution.
①  Transcendentalism
②  Darwinism
③  Marxism
④  Freudianism
【单选题】 As a realist, Mark Twain concerned particularly about the local character of a region, which came about as “_________”.
①  Naturalism
②  Transcendentalism
③  Local Colorism
④  Both A and C