数控机床的进给系统一般采用（）进行传动斜齿轮的间隙消除。
A.垫片
B.轴向弹簧
C.螺钉
D.键
参考答案：B
四、单词拼写（10分）
61．WTO stands for World Trade ______________(组织).
62. How do you account for your _________(行为)on that night?
63.In tree years he will _______(毕业) from BeijingUniversity.
64.She is __________(满意) with her son’s progress.
65.It’s kind of you to help the ____________(无家可归的) tramp.
66.He’s an __________(突出的，杰出的)example of a hardworking pupil.
67.One __________(成年人) and two children ,please.
68.There must be something__________(理解).
69.Work was little_______(吸引力) for him.
70.My ___________(发动机) is always breaking down.
画一条比8cm少3cm的线段。
