A.共享鎖 B.排它鎖 C.死鎖 D.行級共享鎖
A.1,3,4,5,2 B.4,1,3,2,5 C.1,3,2,5;4not required D.4,1,5,2;3not required
A.aio B.adm C.cpu D.lio