犬病毒性肝炎可分为（）。
A.犬肺炎型
B.犬神经型
C.犬肝炎型
D.犬呼吸道型
参考答案：C, D
Kitty _____ London and she is talking about her trip at home now. [ ]
A. has been
B. has gone
C. has gone to
D. has been to
AP域的布放类型有如下几种（）。
A.独立布放
B.离散布放
C.普通布放
D.密集布放
