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问题 单项选择题

男，35岁，突发呼吸困难伴窒息感，查体：呼吸30次/分，呼气延长，双肺哮鸣音，无湿啰音。

该患者的呼吸困难属于

A．混合性呼吸困难

B．呼气性呼吸困难

C．吸气性呼吸困难

D．阵发性呼吸困难

答案

参考答案：B

问答题

一卧式车床床头顶尖比尾座顶尖高0.01mm，该车床床头和尾座两顶尖等高度是否合格
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改错题

假定英语课上老师要求同桌中间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改。

增加：把缺词处叫个娄子符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第11处起）不计分。

I hardly remember my grandmother. She used to holding me on her knees and sing old songs. I was only four when she passes away. She is just a distant memory for me now.I remember my grandfather very much. He was tall, with broad shoulder and a beard that turned from black toward gray over the years. He had a deep voice, which set himself apart from others in our small town,he was strong and powerful. In a fact, he even scared my classmates away during they came over to play or do homework with me. However, he was the gentlest man I have never known.
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