第29题: [单项选择]A. The man has left a good impression on her family. B. The man’s jeans and T-shirts are stylish. C. The man should buy himself a new suit. D. The man can dress casually for the occasion. 参考答案:D 答案解析:[听力原文] M: Finally I’ve got the chance to put on my new suit tonight. I hope to make a good impres
第30题: [单项选择]铁路联锁设备中,臂板电锁器联锁属于( )。 A. 集中联锁 B. 非集中联锁 C. 整体联锁 D. 非整体联锁 参考答案:B 答案解析:[解析] 本题考核的是联锁设备的基本类型。联锁设备分为集中联锁(继电联锁和计算机联锁)和非集中联锁(臂板电锁器联锁和色灯电锁器联锁)。