83. 何者是按摩疼痛點 (rubbing painful area) 能夠止痛 (analgesia) 的機制？(A)特定神經能量定律 (law of specific nerve energy)(B)閘門控制理論 (gate control theory)(C)抑制網狀致活系統 (reticular activating system)(D)交感神經節前纖維 (sympathetic preganglionic fiber) 過度活化