患者50岁，胃肠出血，结合图像，最可能的诊断是() ["A．胃平滑肌肉瘤","B．胃腺癌","C．胃淋巴瘤","D．胃溃疡","E．以上都不是"]
7月份，农村男孩，3岁，在田间玩耍，午饭后就突然呕吐伴有腹泻，腹痛，大汗淋漓等，若就诊，首先考虑() ["A．上呼吸道感染","B．中暑","C．农药中毒","D．细菌性痢疾","E．病毒脑炎"]
试述A型肉毒毒素(BTX)注射治疗偏侧面肌痉挛的机理。
洗胃时高锰酸钾的浓度最佳是() ["A．1:1000","B．1:10000","C．1:500","D．1:100","E．1:5000"]
气体中毒的特点() ["A．毒物在组织中广泛分布","B．毒物经肾脏和消化道排出","C．仅通过呼吸道吸收","D．毒物易迅速吸收","E．毒物多为脂溶性"]
枕大神经阻滞:体表定位方法和操作注意事项.
