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【简答题】
交流接触器与直流接触器的主要区别是通过( )的电流不同。
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反馈参考答案：
举一反三
【简答题】A．She drove after him and informed the police on her car telephone. B．She telephoned to the police on her car phone all the time in her car. C．She followed the gunman by walking who had shot at anothe...
【单选题】-I hear Tom ________ playing games. -________ no wonder he is easy to feel sleepy in class. [ ]
A.
is addicted to; There is
B.
addicts; There is
C.
addicts; It is
D.
is addicted to; It is
【单选题】Granny read newspaper every day in her sixties _____ she could keep herself informed of the latest news.
A.
so that
B.
in case
C.
even though
D.
as if
【单选题】Only her friends knew she had a(n) fatal illness, and her family was not informed.
A.
strange
B.
deadly
C.
serious
D.
benign
【单选题】关于FcαR的叙述哪项是错误的?( )
A.
属Ig超家族
B.
介导Ⅰ型超敏反应
C.
主要表达于单核细胞、巨噬细胞、中性粒细胞
D.
介导吞噬、ADCC
E.
介导炎症介质的释放
【简答题】土壤的物理机械性包括土壤的________性、________性和可塑性。
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