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问题 单项选择题

关于碳二加氢反应器飞温的原因，下列说法不正确的是（）。

A．反应器紧急停车时，未将现场氢气截止阀关闭，导致氢气漏入床层，开车时发生飞温

B．开车初期，催化剂活性过高

C．配氢速度过快

D．反应器投用时，催化剂未还原

答案

参考答案：D

改错题

Everyone has his own attitude____1____ getting old. The night before her eighth birthday, I found my daughter Lizzy sat on her bed ____2____ (weep). “I love being seven,” she cried. “I don’t want to be eight!” I held her in my arms and explained that____3____ was going to be even better to be eight than being seven. I told her how much I loved her and ____4____a wonderful birthday she was going to have. Eventually she was comforted. It’s always strange ____5____ (tell) that you are a year older, even when you aren’t very old. Now I’m in my early 60s, and I don’t always recognize the face in the mirror, _____6____ something has changed the way that I think. The process of aging ____7____(increasing) interests and amazes me, annoys and irritates me, and sometimes still makes me ____8___(frighten), too, but much, much less than it used to. There is ____9____ ongoing sadness at the absence of the friends and family members____10____ have died before me.

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单项选择题 案例分析题

患者，男性，60岁，突然持续性胸痛5小时入院，查心电图确诊为广泛前壁心肌梗死，入院后出现三度房室传导阻滞，QRS波群宽大畸形，心率为40次/分。

患者三度房室传导阻滞的转归（）

A.为一过性

B.为持续性

C.如该病人存活，不需安装永久起搏器

D.溶栓后阻滞可能改善

E.急诊PCI后阻滞可能改善
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