I have had no reply from her____.
“汉武雄图载史篇,长城万里遍烽烟。何如一曲琵琶好,鸣镝无声五十年。”这首诗是现代史学家翦伯赞所作,他在诗中赞扬了( )
几种微粒具有相同的核电荷数,则可说明( )
设x,y满足约束条件x-y≤0x+y-1≥0x-2y+2≥0,则z=x+3y+m的最大值为4,则m的值为____