题目内容

In modern times• China has deployed the world’s 1) _______ ultra-high voltage AC and DC lines.• China’s 2) _________________ technology has reached 3) ______________________ and has been exported to other countries.China’s coal technologies have allowed for 4) _________________ and more efficiency.• China has invested a lot in 5) _____________ and new-energy vehicles.• China has the world’s 6) ____________ supercomputer, with its processors designed and made in 7) ____________.• China’s space program has been progressing 8) ______________.

查看答案
更多问题

Check the things which are in the speaker’s childhood room.

A. Soft animals
Books
C. A Harry Potter poster
D. A pure black wall
E. A CD rack

表达零件内部结构时,对称类零件宜采用( )视图。

A. 全剖
B. 半剖
C. 局部剖
D. 阶梯剖

表达零件内部结构时,内部复杂的零件宜采用( )视图。

A. 全剖
B. 半剖
C. 局部剖
D. 阶梯剖

轴上的键槽、凹坑、穿孔等结构常用( )表示。

A. 移出断面图
B. 重合断面图
C. 剖面图

答案查题题库