电调天线的调节方式可以分为()调节和()调节两种。
参考答案:手动;电动
——I let my secretary call you several times. Do you know that?
——I _____in a meeting. I’m sorry.
A.had been
B.was
C.am
D.have been
法洛四联症病理解剖改变不包括()
A.室间隔缺损
B.房间隔缺损
C.主动脉骑跨
D.右心室肥厚
E.肺动脉狭窄