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【单选题】
某软盘有40个磁道，磁头从一个磁道移至另一个磁道需要5ms。文件在磁盘上非连续存放，逻辑上相邻数据块的平均距离为10个磁道，每块的旋转延迟时间及传输时间分别为100ms和25ms，则读取一个100块的文件需要(22)时间。A.
17500ms
B.
15000ms
C.
5000ms
D.
25000ms
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举一反三
【单选题】My father gave his old car to me and he is _____ a new car. [ ]
A.
considered buying
B.
considered to buy
C.
considering buying
D.
considering to buy
【多选题】下列胸部叩击的方法中哪些是正确的 ( )
A.
自下而上，从外到内
B.
每一肺叶叩击1～3分钟
C.
每次叩击5～15分钟
D.
每分钟叩击120～180次
E.
安排在进餐后2小时至餐前30分钟完成
【简答题】My father told me that he was considered too difficult a student (teach) ______when he was young.
【简答题】A．He has considered getting it. B．He thought it was interesting. C．He bought it already. D．He has finished reading it.
【单选题】He is quite strange, for everything he does is opposite to ______ is considered normal behavior.
A.
whether
B.
that
C.
what
D.
which
【单选题】He was working in Africa and was considered by the company as the best manager at collecting ______ and making money.
A.
ivory
B.
irony
C.
inventory
D.
levy
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