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【单选题】
已知均匀带正电圆盘的静电场的电场线分布如题7.1.2图所示．由这电场线分布图可断定圆盘边缘处一点P的电势UP与中心O处的电势UO的大小关系是( )(A.
U P ＝ U O .
B.
U P ＜ U O .
C.
U P ＞ U O .
D.
无法确定的 ( 因不知电场强度公式 ) ．
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【简答题】What color do you like best? Do you like yellow, orange and red? If you do, you must be an optimist, a leader, or an active person who enjoys life, people and excitement. Do you prefer grey and blue? ...
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A.
one can choose his color preference
B.
one is born with his color preference
C.
one's color preference is changeable
D.
one has to choose his favorite color as soon as he can see clearly
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A.
52000
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57778
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59000
D.
59340
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A.
border:2px solid red;
B.
border-bottom:2px solid red;
C.
border-style:2px solid red;
D.
border-color:2px solid red;
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A.
excitement
B.
stimulation
C.
luxury
D.
pleasure
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A.
52 000
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57 778
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59 000
D.
59 340
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A.
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B.
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C.
anyone is born with his color preference
D.
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A.
readily
B.
certainly
C.
necessarily
D.
instantly
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