副脉
参考答案：原有纵脉上发生的许多分支脉，这些分支脉叫副脉。
初中化学实验室有一瓶失去标签的盐溶液，实验测得其呈碱性，其PH一定______，该盐的化学式可能是______．检验碳酸盐的试剂是______，检验时产生的实验现象为______．
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 effective.
