【单选题】【消耗次数:1】
You should have put the milk into the icebox, I expect it ____ undrinkable.
became
had become
has become
becomes
参考答案:
复制
纠错
相关题目
【多选题】 Adult schools have become popular and the enrollment has increased_________ .
①  rapidly
②  quickly
③  greatly
④  hardly
【单选题】 Adult schools have become popular and the enrollment has_________ rapidly.
①  increase
②  increases
③  increased
④  increasing
【单选题】 Hed had more than enough practice to become a(n ) ____.
①  special
②  skill
③  profession
④  expert
【单选题】 —We all had a lot of fun at the barbecue ?yesterday. Pity you weren’t there. —I really should have gone with ?you but I _______ on some remaining problems.
①  worked
②  was working?
③  would work
④  would have worked
【单选题】 23. English has become _____ international language of business.
①  the
②  . a
③  /
④  . one
【单选题】 My brother has decided to become a policeman, _____what may.
①  came
②  come
③  coming
④  having come
【单选题】 I should think they have done it ________, to avoid paying you the money.
①  with purpose
②  on purpose
③  in purpose
④  to purpose
【单选题】 14.____in a mountain village, Zhang ming has now become a famous writer.
①  Beforeaschoolteacher
②  Onceaschoolteacher
③  Hewasaschoolteacher
④  Heworkedasaschoolteacher.
【单选题】 Why has jogging become so popular? Because jogging is a very_________ exercise.
①  boring
②  disturbing
③  frustrating
④  interesting
【单选题】 “Do you think, because I am poor, obscure, plain, and little, I am soulless and heartless? You think wrong!—I have as much soul as you,—and full as much heart! And if God had gifted me with some beauty and much wealth, I should have made it as hard for you to leave me, as it is now for me to leave you. ” This passage is taken from ________.
①  Emma
②  Wuthering Heights
③  Jane Eyre
④  Pride and Prejudice
随机题目
【单选题】 加工中心加工时,零件一次安装应完成尽可能多的零件表面加工,这样有利于保证零件各表面的( )。
①  尺寸精度
②  相互位置精度
③  表面粗糙度
④  形状精度
【单选题】 影响数控车床加工精度的因素很多,要提高加工工件的质量,有很多措施,但( )不能提高加工精度。
①  将绝对编程改变为增量编程
②  正确选择车刀类型
③  控制刀尖中心高误差
④  减小刀尖圆弧半径对加工的影响
【单选题】 车削时为降低表面精糙度,可采用( )的方法进行改善。
①  增大主偏角
②  减小进给量
③  增大副偏角
④  减小刀尖圆弧半径
【单选题】 下列叙述中,( )适宜采用数控铣床进行加工。
①  轮廓形状特别复杂或难于控制尺寸的回转体零件
②  箱体零件
③  精度要求高的回转体类零件
④  特殊的螺旋类零件
【单选题】 机械零件的真实大小是以图样上的( )为依据。
①  比例
②  尺寸数值
③  技术要求
④  公差范围
【单选题】 采用刀具预调仪对刀具组件进行尺寸预调,主要是预调整( )。
①  几何角度
②  轴向和径向尺寸
③  粗糙度
④  锥度
【单选题】 影响刀具寿命的根本因素是( )。
①  刀具材料的性能
②  切削速度
③  背吃刀量
④  工件材料的性能
【单选题】 加工中心通常按工序集中原则划分工序,( )不是工序集中原则的优点。
①  提高生产效率
②  缩短工艺路线
③  保证各加工表面间相互位置精度
④  优化切削用量
【单选题】 换刀点是指在编制数控程序时/相对于机床固定参考点而设置的一个自动换刀的位置/它一般不能设置在( )
①  加工零件上
②  程序原点上
③  机床固定参考点上
④  浮动原点上
【单选题】 加工机座、箱体、支架等外形复杂的大型零件上直径较大的孔,特别是有位置精度要求的孔和孔系,应该采用( )。
①  钻孔
②  铰孔
③  镗孔
④  磨孔