Which of the following statements represents a major principle of chronic pain management

A. A physiologic approach is most effective.
B. A psychological approach is most effective.
C. A pharmacologic approach is most effective.
D. A multidisciplinary approach is most effectiv

检验检疫证书使用国家质检总局制定批准的格式，分别使用英文、中文、中英文合璧签发。 ( )