根据短文,选择正确答案。
Van and Ted are twin brothers. They look the same. They are English. They are eleven. They are in No.15 Middle School. They are new students in Class One, Grade One. Van sits in Row One. Ted sits in Row Three.
家居广安市的小丽给在成都市的姨妈家里打电话,出现“占线”情况,则下列判断中错误的是( )
____是中国第一个乒乓球男子单打世界冠军。
已知a,b,c∈R,二次函数f(x)=ax2+bx+c,集合A={x|f(x)=ax+b},B={x|f(x)=cx+a}.
(Ⅰ)若a=b=2c,求集合B;
(Ⅱ)若A∪B={0,m,n}(m<n),求实数m,n的值.
等底等高的一个圆柱与一个圆锥的体积和是96立方分米,圆柱的体积是____立方分米,圆锥的体积是____立方分米。