为了使零件轴向定位可靠,轴肩或轴环过渡部位的圆角半径应比毂孔的倒角高度或圆角半径()。
A.大
B.小
C.相同
D.无严格要求
参考答案:B
25. -- Is this the dictionary you want?
-- Oh, that’s not what I want. I mean the New English-Chinese Dictionary.
A.possibly
B.probably
C.exactly
D.Generally
什么叫做过载?什么叫做低电压或电压过低?