A.為在同一工作任務(wù)中打開同一圖形實(shí)例的次數(shù) B.為在不同工作任務(wù)中打開同一圖形實(shí)例的次數(shù) C.隨機(jī)數(shù) D.以上選項(xiàng)都不正確
A.DrawingFileName_recover.dwt B.DrawingFileName.dwg C.DrawingFileName_a_b_nnnn.sv$_ D.DrawingFileName.bak
A.DWG B.DWT C.DWS D.DWF