“先安未受邪之地”属于( )
A．未病先防
B．因人制宜
C．既病防变
D．寒因寒用
参考答案：C
A （ ）is a software that provides a method of communication between two electronic devices over the World Wide Web.
A. router
B. cober
C. J2EE
D. web service
Which of the following sets of numbers does NOT meet the requirements for a set of probabilities（）
A. (0.50, 0.50).
B. (0.25, 0.25, 0.25, 0.25).
C. (0.10, 0.20, 0.30, 0.40, 0.50).
