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【单选题】
在文件系统中，文件的不同物理结构有不同的优缺点。在下列文件的物理结构中，不具有直接读写文件任意一个记录的能力的是______。A.
顺序结构
B.
链接结构
C.
索引结构
D.
Hash结构
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反馈参考答案：
举一反三
【多选题】which of the following statement describ wholesalers?
A.
selling goods for resale
B.
selling goods in small quantities
C.
dealing in a limited range of goods
D.
more capital required
【单选题】Of the following, which is most likely attributable to the effect of endorphins as described in the passage?
A.
After an injection of novocaine, a patient has no feeling in the area where the injection was given.
B.
After taking ibuprofen, a person with a headache gets quick relief.
C.
After receiving a local anesthetic, an injured person reports relief in the anesthetized area.
D.
After being given aspirin, a child with a badly scd elbow feels better.
E.
After acupuncture, a patient with chronic back pain reports that the pain is much less severe.
【简答题】清洁剂的化学性质通常以 pH值表示,1-6表示 性化合物, 8-14表示 性化合物, 7表示 性化合物。
【简答题】简述历史教学论(历史课程与教学论)发展的趋势。历史教师为什么要了解历史教学论的发展历程?
【单选题】Loise Roddon describes Brighton as “a loveably __ city”
A.
crowded
B.
polluted
C.
unconventional
D.
erous
【简答题】简述体育课程与教学论的学科概况及其发展历史。
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