铜的比热容是铅的3倍,相同质量的铜块和铅块吸收相同的热量,升高的温度之比为____
— Lily, how about _________ birthday party yesterday?
— It was __________ success.
已知一元二次方程x2﹣8x+12=0的两个解恰好是等腰△ABC的底边长和腰长,则△ABC的周长为( )
如图为模拟膈肌运动的示意图,下列叙述错误的是( )