A.
B.
C.
D.
[单选题]A.B.C.D.
[单选题]A.-3π/2B.0C.2π/3D.3π/2
[单选题]A.4πB.8πC.16πD.32π
[单选题]A.急性毛细支气管炎B.金黄色葡萄球菌肺炎C.吸入性肺炎D.腺病毒肺炎E.支原体肺炎