Windows系统自带的防火墙不能和瑞星杀毒软件同时使用.
参考答案：错
This suit ______ him _______ very young.[ ]
A. makes; look
B. make; looks
C. makes; looks
D. make; look
LOC的频道间隔为（）。
A.0.05MHz
B.0.10MHz
C.0.15MHz
D.0.20MHz
