引起心源性休克最常见的病因是（） ["急性肺动脉栓塞","急性心肌梗死","扩张型心肌病","急性肺水肿","急性心脏压塞"]
日咯血量多少时为中量（） ["50～100ml","100～200ml","300～500ml","100～500ml","大于500ml"]
下列不是高压硅整流管优点的是（） ["体积小","寿命长","内阻小","内阻大","不需要灯丝加热"]
肢端肥大症按病因分类属于（） ["A.免疫性","B.代谢性","C.退化性","D.内分泌性","E.地理环境性"]
选择电源线时，应使电源线的阻值RL、电源电阻R和电源变压器内阻R满足以下关系（） ["RL=Rm+R0","RL=Rm-R0","RL≤Rm+R0","RL≤Rm-R0","RL>Rm+R0"]
某物业管理处客户部接到业主张先生的举报电话，该管理处客户部委托李先生受理业主张先生的投诉。问题
