弘扬中国精神就是要弘扬以爱国主义为核心的民族精神和以改革开放为核心的时代精神。( )
一Do you think that a person can really lose weight by eating fruit?
一No, I don't think so.
《舌尖上的中国》有这样的描述:中国拥有世界上最富戏剧性的自然景观…有助于物种的形成和保存,任何一个国家都没有这样多潜在的食物原材料。
—What was the party like?
—Wonderful. It is years________I enjoyed myself so much.
H2(g)+ 12 O2(g)=H2O(l);△H=﹣285.8kJ/mol
CO(g)+ 12 O2(g)=CO2(g);△H=﹣282.6kJ/mol
C8H18(l)+ 252 O2(g)=8CO2(g)+9H2O(l);△H=﹣5472kJ/mol
CH4(g)+2O2(g)=CO2(g)+2H2O(l);△H=﹣889.6kJ/mol
相同质量的氢气、一氧化碳、辛烷、甲烷完全燃烧时,放出热量最多的是( )