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【多选题】
关于电阻，下列说法中正确的是（）。A.
电阻跟电压成正比，跟电流成反比
B.
电阻率越小，说明导电性能越好
C.
由电阻率的大小可知，铜导线的电阻比铝导线的电阻小
D.
导线越细，电阻越小
E.
导线越粗，电阻越大
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【单选题】What is the Greeks’ attitude to criticism?
A.
They openly accept outsiders’ criticism.
B.
They accept criticism of their society by Greeks.
C.
They believe criticism is good for their society.
D.
They hate criticism from other countries.
【单选题】Criticism and self-criticism is necessary _____ it helps us to correct our mistakes.
A.
by that
B.
at that
C.
on that
D.
in that
【简答题】下面哪个是政府机构?（ ）
【单选题】Criticism and self-criticism are necessary __________they may help us to find out and correct our mistakes.
A.
by that
B.
at that
C.
on that
D.
in that
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