皮皮学，免费搜题
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【单选题】
氧化还原滴定中化学计量点的位置()A.
恰好处于滴定突跃的中间
B.
偏向于电子的是较多的一方
C.
偏向于电子的是较少的一方
D.
无法确定
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反馈参考答案：
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【单选题】When I got on the bus， I __ I had left my wallet at home.
A.
was realizing
B.
realized
C.
have realized
D.
would realize
【简答题】Still, many people are buying the large, round fruit. Pumpkins are an important part of the American celebration of Halloween on October thirty-first. Many families visit farms or farmers’ markets so ...
【多选题】一个单位负反馈系统的开环传递函数为【图片】，试确定系统阶跃响应的动态性能【图片】,【图片】,【图片】。(取【图片】=5%)（ ）
A.
=16.3%
B.
=4.3%
C.
=2.42s , =6s
D.
=1.22s , =8s
【单选题】Not until then _____ their marriage was breaking up because they had little in common.
A.
did I realize
B.
I realized
C.
had I realize
D.
has I realized
【判断题】Carved pumpkins are used to scare away vampires, according to some superstitious people.
A.
正确
B.
错误
【多选题】一个单位负反馈系统的开环传递函数为【图片】，试确定系统阶跃响应的动态性能【图片】,【图片】,【图片】。(【图片】=5%)（ ）
A.
=16.3%
B.
=4.3%
C.
=2.42s , =6s
D.
=1.22s , =8s
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