未知题型
WritealineofcodethatdeclaresavariablenamedlayoutoftypeLayoutManagerandinitializesitwithanewobject，whichwhenusedwithacontainercanlayoutcomponentsinarectangulargridofequal-sizedrectangles，3componentswideand2componentshigh.（）
- A.（）
【参考答案】
layout=newGridLayout(2,3);'or:'LayoutManagerlayout=new
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