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【单选题】
函数y=cosx是
A.
奇函数
B.
偶函数
C.
既是奇函数也是偶函数
D.
非偶函数
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【判断题】电阻的倒数叫做电导,电导值越大,导电性越高。( )
A.
正确
B.
错误
【单选题】方向不变,大小随时间有脉动变化的电流叫做()。
A.
各串联电阻之和的倒数
B.
各串联电阻之和
C.
各串联电阻的平均值
【简答题】Britain almost more than any other country in the world must seriously face the problem of building upwards, that is to say, of accommodating a considerable proportion of its population in high blocks...
【简答题】Britain almost more than any other country in the world must seriously face the problem of building upwards, that is to say, of accommodating a considerable proportion of its population in high blocks...
【判断题】电阻的倒数叫做电导
A.
正确
B.
错误
【简答题】电阻的倒数叫做____,用符号____表示。
【单选题】In fact,most of us would the consequences  of stupid  decisions taken by others.
A.
handle
B.
solve
C.
follow
D.
suffer
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