“重点检重点修”的检查范围和质量标准规定：提速铁路货车罐体鞍座压板无裂损，与（）连接螺栓螺母无松动、丢失。
参考答案：枕梁
选择合适的单词填空。
1. ______________ (Are, Do) you have a bicycle?
2. Turn left ______________ (at, in) the traffic lights.
3. Can you help ______________ (I, me)?
4. Let's ______________ (go, going) to the park.
5. There are many department stores ______________ (in, on) the city.
房地产市场需求的实现条件是( )。
A．购买者 B．购买欲望 C．购买能力 D．购买动机
