【判断题】多数科学家做出最大贡献的最佳年龄是老年。
【判断题】制冷系统的冷却介质是不能中断的,否则会造成积热,工质温度与系统压力骤增,引起爆炸。
【单选题】用海水作为冷却剂冷却淡水、滑油、增压空气,这在系统布置上属于__________.
【单选题】Paul seems ________ Chinese before he came here.
【单选题】多数科学家做出最大贡献的最佳年龄是( )
【单选题】—Paul seems upset today. —Yes,he wrote an application letter to Neusoft but waited__________for a reply .
【单选题】在废气涡轮增压系统中,有中冷器,其作用为()。
【单选题】听力原文:W: It seems Paul doesn't make any progress in science. M: If Paul were my son, I'd just not worry about him. You are already giving him special help after school, you say, so I doubt he'll fail t...
A.
Consult the science teacher.
B.
Improve the teaching skills.
C.
Stop teaching Paul after class.
D.
Take it easy and let it be.