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问题 单项选择题

以下符合渗出液特点的是（）

A.淡黄色，透明

B.比重<1.018

C.细胞数<500×106/L

D.Rivalta试验（-）

E.放置后自凝

答案

参考答案：E

解析：渗出液因毛细血管通透性增加，蛋白成分及细胞数均增多，细胞数常>500×106／L，蛋白含量>30g/L，易自凝，比重>1.018，渗出液因含大量黏蛋白而黏蛋白定性试验阳性，漏出液为阴性。

完形填空

阅读下面短文，根据以下提示：1)汉语提示；2)首字母提示；3)语境提示，在每个空格内填人一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确、拼写正确。

A boy trembled in the cold winter, wrapping his arms around himself on a bus stop bench. He

wasn’t小题1:_______ (穿着)warm clothes and the temperature was -10oC. A heartbreaking scene! But the good 小题2:d_______ of the ordinary people who witnessed the 11-year-old Johannes were both joyous小题3:________inspiring. A woman，sitting next to the boy，discovered he was小题4:_______ a school trip and was told to meet his teacher at the bus stop. She selflessly小题5:c_______ her own coat around his shoulders. Later, 小题6:_______woman at first gave him her scarf, then wrapped him in her large jacket. Throughout the day, more and小题7:_______ people offered Johannes their gloves and even the coats off their backs. 小题8: _______ (事实上), it was a hidden camera experiment by Norwegian charity SOS Children’s Village as part of their winter campaign to gather donations to send much-needed coats and blankets to 小题9:h_______ Syrian children get through the winter. Synne Ronning, the information head of the organization, also noted that the child was a小题10:v_______ who was never in any danger during the filming.
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单项选择题 A1/A2型题

在气相色谱法中，死时间是某种气体在色谱柱中的保留时间。这里的“某种气体”是（）

A.被固定相吸附的气体

B.被固定相溶解的气体

C.被固定相滞留的气体

D.不被固定相溶解的气体

E.无法确定的气体
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