A. It is a famous bank. B. It is a big department store. C. It is a famous insurance company. D. It is a large hotel.
A. 配合间隙 B. 发动机功率 C. 制动距离 D. 以上全是
A. 正确 B. 错误
A. 辅助线 B. 联络线 C. 区间联络通道 D. 安全线