如图是屈肘和和伸肘示意图,据图回答问题:
秸秆焚烧严重污染空气,可将其回收制成秸秆煤.完全燃烧0.2kg的秸秆煤可放出的热量为 ____ J;若这些热量完全被20kg、初温为20℃的水吸收,可使水温升高 ____℃(q秸秆煤=2.1×107J/kg,c水=4.2×103J/(kg•℃)).
眼疾手快
____眼____
____眼
①Mum hello family a thin girl your mother Mr Wang
②Is he a fat teacher? No,he isn't. He's a thin teacher.