單項選擇題

當(dāng)以下哪個統(tǒng)計項不為零的時候,說明發(fā)生了paging過載現(xiàn)象:()

A.ACCESS_PER_PCH
B.PCH_Q_PAGE_DISCARD
C.ALLOC_SDCCH_FAIL
D.PCH_AGCH_Q_LENGTH

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