一名冠心病病人在全麻下行左肺切除术，术中处理肺门时突然出现心室颤动，请判定下列哪种处理方法正确

A．胸外心脏挤压

B．胸外电除颤

C．胸内心脏挤压

D．静注利多卡因lmg/kg

E．胸内电除颤

In order to ensure database's ( ), DBMS provides grant, function to control user's access rights.

A．security

B．integrality

C．consistency

D．dependability