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单项选择题
A.Pragma>Cache-Control>Expires>ETag>Last-Modified
B.Pragma>Expires>Cache-Control>ETag>Last-Modified
C.Pragma>Cache-Control>Expires>Last-Modified>ETag
D.Pragma>Cache-Control>ETag>Expires>Last-Modified
单项选择题
A.[1,2,3,5,10]
B.[10,5,3,2,1]
C.[1,10,2,3,5]
D.[5,3,2,10,1]