单项选择题以下哪些不属于制冷系统压力测试条件? Which of the following do not belong to the refrigeration system pressure test conditions? A、热车Hot car B、外循环External circulation C、打开车门Open the door D、内循环Internal circulation
多项选择题坚持思想建党和制度治党紧密结合,注重解决思想问题、拧紧“总开关”。党的十八大以来,陆续开展了()。