引起弥散量降低的有()
A.肺出血
B.肺结核
C.气胸
D.肺间质纤维化
E.红细胞增多症
参考答案:B, C, D
— I came all the way to inform you of the time and place of the meeting.
— You could have _____ yourself the trouble by calling me. [ ]
A. shared
B. spared
C. cost
D. removed
超急性结膜炎的常见致病菌的传染途径是_________、_________。