[单项选择]胃大部切除术后并发倾倒综合征的病因是 A. 胃切除过多 B. 胃快速排空 C. 胰岛素分泌过量 D. 胃排空延迟 E. 输入段梗阻
参考答案:B
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第1题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. He has managed to sell a number of cars. B. He is contented with his current position. C. He might get fired. D. He has lost his job. 参考答案:C 答案解析:[听力原文] W: How come Jim lost his job M: I didn’t say he had lost it. All I said was if he did
第30题: [单项选择]有关脑干诱发电位,下列说法正确的是()。 A. 属于主观测听 B. 刺激声为连续声 C. 由潜伏期在10毫秒内的6个正波组成 D. ABR中Ⅰ、Ⅲ、Ⅵ波最稳定 E. 鉴别器质性聋与功能性聋 参考答案:E 答案解析:ABR属于客观测听,其刺激声为短声、滤波短声或短纯音。ABR诱发反应由潜伏期在10毫秒内的7个正波组成,其中Ⅰ、Ⅲ、Ⅴ波最稳定,而Ⅵ、Ⅶ波最差。除鉴别器质性聋与功能性聋外,还可用于判定高频听阈、新生儿