多项选择题What do you say when you have a bad connection on a call? ( ) A. I can’t hear you very much. B. I am losing you. C. You are breaking up. D. I've got really weak signal.
多项选择题下列工况中，属于非正常排放的有（ ）。 A. 开、停车时排放 B. 储罐呼吸排放 C. 部分设备检修时排放 D. 设备偶发的瞬时排放
