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【单选题】
IgG分子中与补体结合的部位存在于（）。A.
CH1
B.
VL
C.
VH
D.
CH2
E.
CH 2
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【简答题】根据危险化学品的判定步骤,请指出氯化钾是否应该作为危险化学品进行管理?
【简答题】Select ONE answer choice that best completes each blank of the following sentences. 1. The whole affair was based on evidence from a(n) ____ from the secret service, who claimed that the secret servic...
【单选题】The classic working-class "mum," living at home to look after her numerous children with the man as the bread-winner, was a folk myth sustained by the population census in the 1970s which______less an...
A.
conforms
B.
resembles
C.
is similar
D.
is identical
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