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【单选题】
一般锂聚合物电池上2组线。1组是输出线(粗,红黑各1根);1组是锂电引出线(细,与s数有关),用以监视平衡充电时的单体电压。下面说法正确的是(无提示)A.
6S电池有7根引出线
B.
6S电池有6根引出线
C.
6S电池有5根红色引出线,1根黑色引出线
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【简答题】阅读理解。 Mr. Peter Johnson, aged twenty-three, battled for half an hour to escape from his trapped car yesterday when it landed upside down in three feet of water. Mr. Johnson took the only escape route ...
【简答题】人参总皂苷中属于四环三萜皂苷元的皂苷有
【单选题】Was it at the aid battle on June 8,1994, ______ was led by Captain Johnson ____ Peter lost his life?
A.
when; that
B.
that; who
C.
which; that
D.
that; when
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