转K2型转向架是装用（）的铸钢（）式转向架。_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

转K2型转向架是装用（）的铸钢（）式转向架。

答案

参考答案：变摩擦减振装置；三大件

选择题

We have been good friends for many years, we often keep with each other. [ ]

A. for touch

B. with touch

C. in touch

D. to touch

问答题

简述违约金的概念和特征。