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【单选题】
空气电池氧气还原反应电子转移越多，得到的电流越大，实现2电子或4电子的关键是（ ）的选择A.
催化剂
B.
负极材料
C.
电解质
D.
电池结构
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举一反三
【简答题】处理 公差和 公差之间关系的原则称为公差原则。
【单选题】"A sampling of expressions"in the last paragraph means ________.
A.
"the giving of only one example to show one's feelings"
B.
"quite a number of examples"
C.
"expressions that need examples"
D.
"expressions given to serve as examples"
【单选题】According to the Kaiser Poll, which of the following is NOT correct?
A.
The country is making progress against AIDS.
B.
AIDS drags still cannot save people's lives.
C.
AIDS drags can now make people live longer.
D.
More and more people die of AIDS now.
【简答题】魏晋南北朝时期田园诗歌的代表作家是____,乐府诗歌代表作家是___,山水诗代表作家是____,永明体代表作家是____
【单选题】The Napier Municipal Government ______ consults with members of the community before making major policy decisions.
A.
regular
B.
regulate
C.
regularly
D.
regulation
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