A.draw(booleanreserve,functioncallback)
B.createLinearGradient(numberx0,numbery0,numberx1,numbery1)
C.createCircularGradient(numberx,numbery,numberr)
D.createPattern(stringimage,stringrepetition)
第2题
A.draw(booleanreserve,functioncallback)
B.createLinearGradient(numberx0,numbery0,numberx1,numbery1)
C.createCircularGradient(numberx,numbery,numberr)
D.createPattern(stringimage,stringrepetition)
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