卧式镗床前立柱燕尾导轨面磨损后,主轴箱停留在导轨不同的磨损位置镗孔时,孔中心线将同工作台面产生()度误差。
A.位置
B.等高
C.平行
D.垂直
参考答案:C
从1到100的自然数中,每次取出不同的两个数,使它们的和大于100,则可有______种不同的取法.
根据短文内容,完成所缺的单词。(5分)
It’s not 1 to be the same. I like to have friends who are 2 from me. My best friend Larry is taller and more outgoing than me. We 3 like sports, but Larry is
4 athletic than me. He 5 beats me in tennis. Also, I’m quieter than he is.