传染病潜伏期分布是非正态的，现有传染病患者20例，问其平均潜伏期，应用哪个公式
参考答案：D
The present situation is very complex, so I think it will take me some time to ________
its reality. [ ]
A. make up
B. figure out
C. look through
D. put off
壁胸膜不包括（）。
A.肺胸膜
B.肋胸膜
C.纵隔胸膜
D.膈胸膜
E.胸膜顶
