【单选题】为保护少年儿童的社会权利,l9联合国大会通过了( )。
【简答题】可燃混合气浓度的表示方法有两种,即:( )和( )
【简答题】柴油机启动后,冷却水温上升很快的原因主要是主循环系统内()。
【单选题】A.He missed the bus. B. He got to the wrong place. C.He forgot the time. D. He was sick.
B.
He got to the wrong place.
【简答题】Translate the following into Chinese, paying particular attention underlined parts. 1. After the visit, he was deeply impressed by the people there. 2. I love having Fridays off . 3. I’m afraid Mr. Le...