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【多选题】
肥大细胞脱颗粒释放的炎症介质有哪些?A.
组胺
B.
缓激肽
C.
花生四烯酸代谢物
D.
去甲肾上腺素
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举一反三
【简答题】Read the article and the sentences. Choose the best answer A, B or C.
【单选题】人们在确立理想和追求理想的过程中，总会感受到理想与现实的矛盾，对于理想与现实的矛盾，正确的认识和态度是( )。
A.
在实际行动中为追求理想而奋斗
B.
不加分析地全盘认同当下的现实
C.
用理想的标准来衡量和要求现实
D.
从主观上放弃美好的愿望和现象
【简答题】对活动头磁盘的访问所花的时间由三部分组成：寻道时间、延迟时间、 ______ 。
【单选题】Read the article and choose the statement that best summarizes its main idea.
A.
Tower Bridge is the most famous landmark of London because of its special structure and location.
B.
The building of Tower Bridge was a very difficult project at that time, but with smart design and orderly construction, it was completed and considered a triumph of engineering.
C.
Workers hired to build Tower Bridge were well paid as their work was not only hard but also dangerous.
D.
Horace Jones did not live to see his design turn to real, but his fame as an outstanding designer was firmly established.
【简答题】磁盘的访问时间由__、__和___三部分组成,其中所占比重比较大的是__,故磁盘调度的目标为__。
【简答题】访问磁盘的时间由三部分组成,即( )、( )和传输时间。
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