内螺纹作剖视时,其剖面线必须连到(),螺纹终止线垂直穿过其轴线且两端连到()
参考答案:小径;大径
He played the computer games till late last night,____ early this morning.
A.more than
B.other than
C.rather than
D.or rather
摩擦片式电磁离合器按摩擦片的数量可分为()两种