扩展并行I/O口时,常采用()和8155可编程芯片。
参考答案:8255
—Sandy, I called you at 9:00 last night, but nobody answered thephone.
—I'm sorry. We _____ a birthday party _____ Jerry.[ ]
A. had;with
B. were having;for
C. are having;for
D. had;for
新生儿生后1分钟检查,皮肤青紫,无呼吸和心跳,肌张力松弛,弹足底无反应,其Apgar评分为()。
A.0分
B.1分
C.2分
D.3分
E.4分