()钻头前角大小(横刃处除外),与有关。
A.后角
B.顶角
C.螺旋角
D.钻头直径
参考答案:C
The film made by Walt Disneyall ______ over the world.[ ]
A. is used to show
B. is used to showing
C. used to show
D. used to be shown
下列图示实验正确的是