恶性肿瘤细胞入血的途径主要为() ["小动脉","毛细血管和小静脉","中等动脉","中等静脉","淋巴管"]
“一带一路”建设要充分发挥深圳前海、广州南沙、珠海横琴、福建平潭等开放合作区作用,深化与港澳台合作,打造()。 ["粤港澳自由贸易区","粤港澳经济合作区","粤港澳经济特区","粤港澳大湾区"]
在碎屑岩中不发育的构造是()。 ["生物遗迹构造","生物扰动构造","生物生长构造","植物根痕"]
神经-骨骼肌接头处的化学递质是() ["乙酰胆碱","去甲肾上腺素","肾上腺素","5-羟色胺","神经肽"]
喘证痰热郁肺证选用的方剂为() ["桑白皮汤","麻杏石甘汤","苏子降气汤","越婢加半夏汤","瓜蒌薤白半夏汤"]
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