拔牙后出现口腔上颌窦瘘,但穿孔不大时()。
A.冲洗拔牙创
B.必须做瘘口修补术
C.使拔牙创内充满血块
D.填塞明胶海绵
E.行上颌窦根治
参考答案:D
He is quite strange, for everything he does is opposite to _____ is considered normal behavior.[ ]
A. whether
B. that
C. what
D. which
配置单层Tag的VLAN mapping时不需要配置外层VLAN的优先级。