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【单选题】
函数y=lnx(x>0)的图象与直线y= x+a相切,则a等于 [     ]
A.
ln2-1
B.
ln2+1
C.
ln2
D.
2ln2
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A.
线路合闸和重合闸
B.
投入和重新投入交流滤波器或并联电容器
C.
对地故障
D.
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A.
禁止用人单位招用未满18周岁的未成年人
B.
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C.
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D.
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A.
14
B.
15
C.
16
D.
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A.
following
B.
somewhat
C.
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D.
warmth
E.
flying
F.
quiet
G.
listening
H.
take
I.
heavy
J.
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A.
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B.
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C.
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D.
未满14周岁就业的未成年人被称为童工
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