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【简答题】
一个无限大均匀带电平板，厚度为d、体电荷密度为ρ（ρ>0）。求板内、外电场强度的大小。
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举一反三
【简答题】油液的两个最主要的特性是____________和_____________。液压传动的两个主要参数是__________和____________,其对应的两大原理是 和 。
【简答题】液压油的两大主要特性:()和()。
【单选题】What does the writer mean by saying “Kidnapping is an example of inflation”(Line 1, Para. 4)?
A.
There are more and more kidnapping cases.
B.
Kidnappers demand for more and more ransom.
C.
Kidnappers make more and more mistakes.
D.
Kidnappers are not paid as much as they require.
【单选题】What does Karraker say about women who fall ill?
A.
They are more likely to be widowed.
B.
They are more likely to get divorced.
C.
They are less likely to receive good care.
D.
They are less likely to bother their spouses.
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