铁路车辆的基本构造一般由（）、（）、车钩缓冲装置、（）和车辆内部五个基本部分组成。
参考答案：车体；走行部；制动装置
The news came as no surprise to me. I _____ for some time that the factory was going to shut down. [ ]
A. had known
B. knew
C. have known
D. know
根据《机电产品国际招标投标实施办法》、《进一步规范机电产品国际招标投标活动有关规定》的规定，同一评标项目，来自同一法人单位的评审专家不得超过评标委员会总数的（）。
A.1/4
B.1/3
C.1/5
D.1/6
