第9题: [单项选择]关于赫-白反射(Hering-Breuerreflex)的描述,错误的是() A. 肺泡吸气膨胀时,可引起吸气终止 B. 肺泡呼气回缩后,可引起吸气 C. 细支气管和肺泡 D. 赫-白反射的传入神经为肋间神经 E. 赫-白反射的中枢在延髓 参考答案:D 答案解析:其传入神经为迷走神经,切断迷走神经后,此反射消失。
第34题: [单项选择]What do you get from the man’s answer A. He used to make calls to his parents twice a month. B. He now calls his parents once a week because he has little spare time. C. He never enjoys calling his parents. 参考答案:B 答案解析:[听力原文] W: How often do you call your parents M: I used to phone them twice a week. But now I
第35题: [单项选择]二、三楼层发生大火时怎么办()。 A. 不做任何防护措施跳楼 B. 跳楼姿势采用直立或蹲着用力下跳 C. 自制逃生工具,铺设逃生落地点,并迅速跳楼 参考答案:C