【单选题】作用在刚体上的二力平衡条件是()。
A.
大小相等、方向相反、作用线相同、作用在同一刚体上
B.
大小相等、方向相同、作用线相同、作用在同一刚体上
C.
大小相等、方向相同、作用线相同、作用在两个相互作用物体上
【单选题】“We’ll see vehicles and roads that see and hear and feel and smell and talk and act,” predicts Bill Spreitzer, technical director of General Motors Corporation’s ITS program, which is designing the sm...
【判断题】作用在一个刚体上两个力平衡的充分必要条件是两个力的大小相等、方向相反、作用线在同一直线上。
【判断题】如果车辆发生多轮对脱轨,一般先选择容易复轨的轮对先复轨,其他的轮对根据现场实际情况再分别复轨。
【单选题】Designing a city by differentiating what is public and what is private is a key part of which architectural design?
C.
The inside/outside pattern
【单选题】The designing and producing of the container or wrapper for a product is called _____.