【简答题】阅读理解。 Tokyo may be one of those places that you love and hate at the same time. In Tokyo, there are always too many people in the places where I want to go. There are also too many cars. Tokyo drivers...
【简答题】公称尺寸≤500 mm时,标准公差分为 个等级;公称尺寸>500~3150 mm时,标准公差分为 个等级。
【单选题】Tokyo, the capital of Japan, is one of the largest cities in the world. It is also one of the world's most modern(现代化的)cities. Twice this century, the city was destroyed and rebuilt. In 1923 a major e...
B.
A world famous seaport.
C.
A highly modernized city.
D.
A most attractive city for tourists.
【单选题】下列有关公差等级的论述中,正确的有( )。
C.
公差等级的高低,影响公差带的大小,决定配合的精度
【判断题】已知 是方程 一个特解,则方程的通解是 .
【单选题】蜗杆传动适用于传递两 轴之间的运动与动力。