根据感染途径,肺脓肿的类型有()
A.吸入性肺脓肿
B.继发性肺脓肿
C.血源性肺脓肿
D.机会性肺脓肿
E.创伤性肺脓肿
参考答案:A, B, C
Coming into the room, I found them ______ at the table, _______ chess.
A.seated; playing
B.seating; playing
C.seat; play
D.seated; played
第五套人民币100元纸币的固定人像水印位于纸币的()。
A、正面右侧空白处
B、正面左侧空白处
C、背面左侧空白处
D、背面右侧空白处