【判断题】把机件向不平行于基本投影面的平面投射,所得的视图称为旋转视图。
【单选题】If you don't , you are sure to succeed. [ ]
【单选题】To 'stick to something' means that you continue to do it and don’t ______.
【单选题】当机构运动行程速比系数K()时,可在从动曲柄上使其顺利通过死点位置。
【简答题】求出 1~599 中至少有一位数字为 5 的所有整数。提示:将 1~599 中的整数 i 分解成个位、十位、百位,分别存放在变量 a 、 b 、 c 中,然后判断 a 、 b 、 c 中是否有 5 。
【判断题】把机件向不平行于任何基本投影面的平面投射,所得的视图称为斜视图
【单选题】Don't give up any hope, ________?
【单选题】When you don't know what to do next, never give up, just ______. working out your problem.
【单选题】Listen to the following five short dialogues and choose the appropriate answers.
A.
He has found something wrong with the new computer.
B.
He has used his new computer for writing his paper.
C.
He has just assembled(安装) the computer.
D.
He is tired of using this new computer.