X6132型铣床工作台3个方向的自动进给移动到最终位置时,由()切断电源,使工作台停止进给。
A.挡铁
B.锁紧装置
C.安全离合器
参考答案:A
—How are your children in their new home?
—Fine. The good thing is that they've _______very easily to new environments.
A.used
B.belonged
C.adapted
D.turned
视神经盘(视神经 * * ) ( )
A.是视力最敏锐的部位B.位于眼球前极C.位于黄斑颞侧稍下方区域D.位于眼球后极E.以上均不对