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[单选题]
Youneedtodisplayaverylargesingle-recorddatablock.Sinceitwillbesolarge,aconvenientmeansofnavigationisneededbetweenitems.Whichtypeofcanvaswouldyouusetodisplaythedatablock?()
A.Tabcanvas.
B.Popupcanvas.
C.Spreadtablecanvas.
D.Verticaltoolbarcanvas.
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