【单选题】【消耗次数:1】
WheneverImether,_________wasfairlyoften,shegreetedmewithasweetsmile
who
which
when
that
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相关题目
【单选题】 Which of the following is the time when students work in groups?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small group
④  When students are expected to work on their own at their own speed.
【单选题】 Which of the following is the time when students study by themselves?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 Which of the following is the time when students work in a pair?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 Which of the following is the time when students work as a whole class?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 When traveling, you are advised to take travelers’ checks, which provide a secure _____ tocarrying your money in cash.
①  preference
②  selection
③  choice
④  alternative
【单选题】 Which of following can be said of the common features which are shared by the English and American Romanticists?
①  An increasing emphasis on the free expression of emotions.
②  An increasing attention to the psychic states of their characters.
③  An increasing emphasis on the desire to return to nature.
④  Both A and B.
【判断题】 Which ofthefollowingstatementisNOTtrueaccordingtothetext?<br/>
①  正确
②  错误
【单选题】 Which sentence is correct?
①  Afer finishing her composition, she took up the translation exercise.
②  Afer finishing her composition, the translation exercise was taken up.
【单选题】 Which sentence is correct?
①  Hurrying to the classroom, no one was there.
②  Hurrying to the classroom, she saw nobody there.
【单选题】 Which sentence is correct?
①  To look at a map, the importance of this new railway will be seen.
②  You have only to look at a map to see the importance of this new railway.
随机题目
【判断题】 切削层公称厚度hb。垂直于切削表面度量的切削层尺寸称为切削层公称厚度hb,该说法( )
①  正确
②  错误
【判断题】 切削工具种类很多,形状也各不一样,所以他们切削部分的结构要素和几何形态没有共同的特征,该说法( )
①  正确
②  错误
【单选题】 在刀具工作角度参考系中确定的刀具角度称为刀具的( )
①  现实角度
②  虚幻角度
③  工作角度
【单选题】 ( )是由高硬度和高熔点的金属碳化物和金属黏结剂用粉末冶金工艺制成。
①  硬质合金
②  工具钢
③  高速钢
【单选题】 ( )是指在切削塑性材料时,由于切屑与前刀面之间的压力很大,再加上几百摄氏度的高温,使切屑底部与前刀面发生黏结。
①  冷焊
②  黏结
③  滑动
【单选题】 ( )是工件被切削层在刀具切削刃和前刀面的挤压作用下而产生以滑移为主的塑性变形过程。
①  金属切削
②  数控切削
③  机械切削
【判断题】 Ff是切削合力F在主运动方向上的分力,该说法( )
①  正确
②  错误
【单选题】 ( )是指切削刃发生小块碎裂或大块断裂,刀具不能继续进行切削。
①  碎断
②  崩刃
③  脆性磨损
【单选题】 任何一个物体,如果对其不加限制,那么,它在空间的位置是不确定的,可以向任意方向移动或转动,该说法( )
①  正确
②  错误
【单选题】 ( )是以工件外圆柱面的中心线为定位基准,而夹具定位元件仍与工件外圆柱面保持接触,将其中心线确定在要求的位置上。
①  定心定位
②  V形块定位
③  支撑定位