【单选题】1mo1单原子理想气体从0°C升温到100°C,内能的增量约为
【单选题】常温下,往c 1 mo1?L -1 的醋酸溶液中滴加同体积的c 2 mo1?L -1 的氢氧化钠溶液后,所得溶液的pH=7,则( )
D.
所得溶液c(Na + )=c(CH 3 COO - )
【简答题】语法题 Task 3 Translate the sentences by using the “v-ed” form of the words in brackets. 1. 网上购买的商品价格一般比商店里的低。 (buy) _______________________________________________ 2. 昨天会议上讨论的问题很难解决。 (discuss)__________...
【简答题】Task 3 Translate the following sentences into Chinese. (1) Rich as he is, he never shows off his money. _________________________________________________. (2) Dislike him as we may, we must acknowled...
【简答题】热传递:(1)规律:物体吸收热量,内能______,放出热量,内能______. (2)发生条件:存在______. (3)实质:内能的______. (4)热量:热传递是内能的转移,转移的______多少叫热量.
【简答题】Task 3 Translate the following sentences into CHinese. 1. Most of the 7,000-odd WGA members in regular work hop from show to show, with frequent fallow periods in between. ____________________________...
【简答题】物体的内能 (1)内能:物体内所有分子的______和分子相互作用的______的总和,叫做物体的内能.内能的单位:焦耳(J). (2)影响内能大小的因素:物体内能与温度有关,同一物体温度越高,内能越______;还与物体______有关. 改变内能的两种方式:______和______.
【简答题】溢流坝属于以下哪种类型,() A挡水建筑物和泄水建筑物 B次要建筑物 C挡水建筑物 D泄水建筑物
【简答题】内能的主要应用:(1)______;(2)______.