对于感觉神经，可产生镇痛和镇静中枢的频率是() ["A．100Hz左右","B．50Hz","C．20～30Hz","D．200Hz","E．1～10Hz"]
对于运动神经可引起肌肉强直收缩频率是() ["A．20～30Hz","B．1～10Hz","C．10～20Hz","D．40～50Hz","E．60～100Hz"]
恶性淋巴瘤按照其起源细胞分为哪几种?
导入药物的溶液浓度一般是() ["A．0.5%","B．15%","C．12%","D．20%","E．1%～10%"]
皮肤散在瘀点和紫斑。无粘膜和内脏出血()紫癜伴腹痛、关节痛和肾脏病变()深部血肿，关节腔积血和迟发出血()微血管病性溶血() ["A．过敏性紫癜","B．单纯性紫癜","C．血友病","D．原发性血小板减少性紫癜","E．血栓性血小板减少性紫癜"]
滤泡型淋巴瘤的来源?
