根据用户侧光网络设备设置位置的不同,住宅有线宽带接入有以下哪种方式?()
A、FTTB
B、BTTB
C、FTTH
D、HTTH
参考答案:A, C
After the meeting was over, the secretary ________ the new worker to the manager’s office.
A.rejected
B.suspected
C.arranged
D.guided
呼气终末正压通气的危害在于()
A.不能保障有效通气
B.导致肺气压伤
C.肺部感染
D.导致心脏负担加重
E.肺不张