TD和PHS的隔离度要求为()dB。
A.35
B.62
C.74
D.80
参考答案:D
I wonder if your wife will go to the ball. If your wife _____,so _____mine. [ ]
A. does;will
B. will;does
C. will;would
D. does;do
照片中可见到不规则的颗粒,对颗粒聚集的区域称做
A.模糊度
B.光晕
C.光渗
D.半影
E.斑点