圆度公差是在同一正截面上,半径差为圆度公差值的( )之间的区域。
A.两个同心圆
B.圆柱
C.素线
参考答案:A
262. Sorry, I didn’t make a call to you because I forgot your telephone number. I should have _____ in my notebook.
A.dropped in it
B.put it down
C.dropped it in
D.put down it
自动编号数据类型一旦被指定,就会永久地与_________连接。
A.字段
B.记录
C.表
D.域