实数x 、y满足(x-y)2-(x-y)-6=0,则x-y = ( )。
3或-2
—I didn’t go to work yesterday because my car broke down.
—You _______ mine.I wasn’t using it then.
A.might borrow
B.could have borrowed
C.must have borrowed
D.ought to borrow
集合资产管理计划说明书应当清晰地说明的内容有( )。
A.集合资产管理计划的特点
B.投资方向
C.投资种类
D.投资组合设计