下述慢性肺脓肿影像特征，哪项不对()
A．空洞大小、形态不一
B．可为单发大空洞
C．常有液平面
D．胸膜常增厚
E．常呈偏心性空洞
参考答案：E
Saddam and his followers ______ from Baghdad before the air raids took place. [ ]
A. had escaped
B. has escaped
C. was escaping
D. escape
珠江三角洲位于下列哪个省区中
A．A
B．B
C．C
D．D
