做功和热传递是改变物体内能的两种方式。下列方法中,属于做功改

做功和热传递是改变物体内能的两种方式。下列方法中,属于做功改变物体内能的是

A炉火上的壶水逐渐升温的过程     B柴油机气缸内气体被压缩的过程

C物体在阳光下被晒热的过程      D把烧红的铁块投入水中使铁块温度降低的过程

答案

B

相关题目

已知函数求    (1)求的最小正周期;    (2)函数在区间
已知函数求    (1)求的最小正周期;    (2)函数在区间上的最大值、最小值及相应的x值。
 ________ the birds in the cage? A.Are           B.Have    
 ________ the birds in the cage? A.Are           B.Have          C.Do            D.Does
  D Georgia was waking up to a new president Monday but it was also getting as
  D Georgia was waking up to a new president Monday but it was also getting as its first lady a green eyed linguist from Holland who has already managed to cast a spell over the little Caucasus natio
如果代数式的值为11,那么代数式的值等于      
如果代数式的值为11,那么代数式的值等于      
试判断下列物质能否溶于水,能溶于水的组合是( ) ①葡萄糖
试判断下列物质能否溶于水,能溶于水的组合是( ) ①葡萄糖 ②己醛 ③硬脂酸 ④硬脂酸钠 ⑤硬脂酸镁 ⑥乙二酸⑦ ⑧ ⑨⑩A.①④⑥⑦⑨       
When I was young, I wished for a good car and a big house. That was my idea of
When I was young, I wished for a good car and a big house. That was my idea of success. I took all the advanced classes and tried to do well in the exams with my mind set on going to a key school. I
细胞膜对物质进出细胞的控制主要体现在哪些方面( ) ①
细胞膜对物质进出细胞的控制主要体现在哪些方面( ) ①细胞需要的营养物质可以从外界进入细胞 ②细胞产生的代谢废物可以排出细胞 ③细胞内的核
植物体吸收水分的主要部位,运输水分的通道以及水分散失
植物体吸收水分的主要部位,运输水分的通道以及水分散失的“门户”依次是: A.气孔、导管、根毛             B.根毛、气孔、导管 C.根毛、

最新题目