中枢神经系统可塑性与突触效率改变有关的现象有() ["A．失神经过敏 ","B．潜在通路和(或)突触的启用 ","C．再生长芽 ","D．病灶周围组织的代偿 ","E．对侧半球的代偿"]
胸内负压有何意义?
影响关节稳定性的因素包括() ["A．组成关节的的两个关节面的弧度之差 ","B．关节囊的厚薄与松紧度 ","C．关节韧带的强弱与多少 ","D．关节周围肌群的强弱 ","E．关节周围肌群的伸展性"]
影响脑可塑性的外界因素有() ["A．功能恢复训练 ","B．恒定电场的影响 ","C．神经移植和基因治疗 ","D．促进脑功能恢复的药物 ","E．投入体内的NG(F)"]
与听眶线的夹角均为12°的线有() ["A．听眉线 ","B．听眦线 ","C．听鼻线 ","D．听口线 ","E．瞳间线"]
何谓癌前病变，请列举5种癌前病变或癌前疾病，并说明应如何正确对待癌前病变。
