耳的检查应注意
A.外耳道分泌物
B.乳突压痛
C.耳郭缺损及听力情况
D.邻近部位的炎症
E.邻近部位的畸形
参考答案:C
A: Mum, _____ I watch TV now?
B: No, you . You _____ finish your homework first. [ ]
A. may, can't, must
B. can, can't, may
C. must, needn't, must
D. may, mustn't, can
备份一般有3种方式,即完全符份、增量备份()
A、选择备份
B、安全备份
C、集中备份
D、差分备份