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【单选题】
介导NK细胞、巨噬细胞、中性粒细胞发挥ADCC效应的Ig主要是
A.
IgM
B.
IgG
C.
IgA
D.
IgD
E.
IgE
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举一反三
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A.
17th
B.
18th
C.
19th
D.
20th
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A.
重剑
B.
花剑
C.
佩剑
D.
轻剑
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A.
when
B.
that
C.
since
D.
after
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A.
变软
B.
热脆
C.
冷脆
D.
变硬
【单选题】It was not until last July_______ we started to distribute e-readers and launched an e-book store.
A.
that
B.
who
C.
which
D.
whom
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A.
catch
B.
which
C.
that
D.
as
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【单选题】核武器的爆炸方式有哪几种?()
A.
地面(水面)、地下
B.
地面、空中
C.
地面(水面)、地下(水下)、空中
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