A:相同物质的量的S2与S8分别与足量O2燃烧时消耗O2的质量相等
B:相同质量的S2与S8分别与足量O2燃烧时消耗O2的质量相等
C:标准状况下,1 mol S2的体积约为22.4 L
D:1 mol S8在过量O2中燃烧可生成8 mol SO3
根据问题填空:
如图所示,汽车质量为m,以恒定功率P沿一倾角为θ的长斜坡向上行驶,汽车和斜坡间的动摩擦因数为μ,某一时刻t时刻速度大小为v,则( )
张艺谋的电影中具有历史震撼力的是《活着》。电影中有一个场景:小孩找出他父亲的铁皮包的箱子要交给街道干部用来炼钢。这个场景发生在( )
A
A bus comes to the bus stop.An old man gets on it.There's no seat for him."The boy will give his seat to you."the bus driver says to the old man.But the boy in the seat doesn't stand up.The bus driver looks at the boy,then he says to the old man again in a high voice(声音),"The boy will be happy to give you his seat."This time the boy hears it.His face turns red.He gets up at once.The old man sits down and says to the boy,"Thank you,my boy."
依次填入下面一段文字横线处的语句,衔接最恰当的一组是( )________。________。________。________。________。________。如在某些汉印中,就有“荼”字省作“茶”的写法。①民间的书写者出于某种考虑,将“荼”减去一笔,这就成了“茶”字②随着饮茶习俗的推广,“荼”字的使用频率越来越高③“荼”简写为“茶”,汉代已露端倪④在中唐之前“茶”字写作“荼”,这恐怕不是我们人人都知道的⑤茶作为饮品,我们都很熟悉⑥“荼”有多个义项,“茶叶”义是其中之一