A:质量相等的实心物体,体积较大的组成物质的密度较小
B:kg/m3、g/cm3和kg/dm3都是密度的单位
C:从公式p=m/V能得出物质的密度跟质量成正比,跟体积成反比的结论
D:“锲而不舍,金石可镂”,镂后金石的密度不变
用方框中所给单词的适当形式填空,每个单词限用一次。____ Do you prefer _____________ fashion magazines or news magazines?____ The food that my father cooks ____________ good.____ We should _________ the house as soon as possible, or it’ll be quite dangerous.____ The population in that country _______________ slowly now.____ Wild and Wind is a rock band which as the name suggests is full of _____________.
则:
My uncle knew little about the famous film Queen he saw it yesterday evening.
有一种新型锁﹣﹣声纹锁.只要主人说出事先设定的暗语就能把锁打开,别人即使说出暗语也打不开.这种声纹锁辨别声音的主要依据是( )