【判断题】构件受两个力作用平衡时,两力的大小相等、方向相反并作用在一条直线上。()
【单选题】Software engineering is the science and art of specifying, designing, implementing, and(66)with economy, timeliness and elegance, programs,(67)and operating procedures whereby computers can be made us...
【简答题】This summer holiday, I went to Dalian with my family. We got there ____ (乘飞机). Dalian is a very ____ (美丽的) and modern city. On the bus, we could see ____ (各种各样的) buildings which are great. In the morn...
【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
【简答题】( )是一个简单实用,使用广泛的分析方法。
【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】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。