2CaO2+2H2O=2Ca(OH)2+O2↑
例:过程:新能源公交车减速时,系统进行能量回收.
分析:新能源公交车减速时,速度减小,动能变小;动能转化为电能.
如图所示,人体胰岛素的合成、分泌与细胞内乳酸的含量有密切关系。下列有关分析错误的是
的最小值为.
, we can deal with any difficulties.

如图甲所示,质量为M=0.5kg的木板静止在光滑水平面上,质量为m=1kg的物块以初速度v0=4m/s滑上木板的左端,物块与木板之间的动摩擦因数为μ=0.2,在物块滑上木板的同时,给木板施加一个水平向右的恒力F.当恒力F取某一值时,物块在木板上相对于木板滑动的路程为s,给木板施加不同大小的恒力F,得到
的关系如图乙所示,其中AB与横轴平行,且AB段的纵坐标为1m﹣1 . 将物块视为质点,最大静摩擦力等于滑动摩擦力,重力加速度g=10m/s2 .

函数关系式.
A.素炒西兰花B.牛奶C.炖排骨D.小米粥.
An old lady goes1on Tuesday. She sees a man get out of a car and go into a bank(银行). But the car's window is open. She looks 2 the car. The keys are in it. The old lady takes the keys and follows the man into the bank. At that time, the man takes out a gun(枪) and says quietly to the clerk (职员), "Give me all the 3!" But the old lady doesn't see this. She goes to the man, puts the keys in his hand and says, "Young man, never leave(留下) your keys in your car. Someone may steal (偷) it!" The man looks at the old woman for a few 4. Then he looks at the clerk, and then he runs out of the bank, gets into his car and drives away5.
