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【单选题】
125I标记物检测的放射线为A.
a射线
B.
β射线
C.
χ射线
D.
γ射线
E.
μ射线
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A.
4和2
B.
1和5
C.
2和4
D.
5和1
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A.
frictional
B.
structural
C.
efficiency
D.
insider
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A.
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D.
D
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A.
resent
B.
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C.
resentful
D.
resentfulness
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A.
part-time unemployment.
B.
cyclical unemployment.
C.
frictional unemployment.
D.
seasonal unemployment.
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A.
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B.
错误
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