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【简答题】
在电力机车上,继电器主要用于( )电路。
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皮皮学刷刷变学霸
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【简答题】本音频共有四个问题,请按照要求完成答案填写,每题只写一道问题的答案。 请回答第二个问题,将答案写下来。
【简答题】本音频共有五个问题,请按照要求完成答案填写,每次只回答一道问题。 听完后请回答第四个问题。
【简答题】“桃李不言，下自成蹊”这句话体现的德育方法是（ ）。
【单选题】It can be inferred from the passage that the key element in improving the reading ability of children lies in ______.
A.
No Child Left Behind Law
B.
ail kinds of experiments
C.
the students' awareness of their shortcomings
D.
the teachers' guidance
【单选题】In bringing up children , every parent watches eagerly the child ’ s acquisition of each new skill - the first spoken words , the first independent steps , or the beginning of reading and writing . It...
A.
. observe the rules themselves
B.
. be aware of the marked difference between adults and children
C.
. forbid things which have no foundation in morality
D.
. consistently ensure the security of their children
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