行扁桃体切除术的手术适应症是()。
A.并发扁桃体周脓肿
B.扁桃体Ⅱ度肿大
C.病灶扁桃体
D.白喉带菌者保守治疗无效
E.扁桃体良性肿瘤
参考答案:A, C, D, E
So heavy is his _______ that he is as busy as a bee, unable to spare(抽出) even a day for his family in a month.
A.block
B.source
C.schedule
D.attitude
PC机中,8086执行MOV指令时,产生访问存储器的读、写信号的部件是()。
A.总线控制电路
B.CPU
C.总线裁决电路
D.DMA控制器