题目内容
若某个S接线器的入线数为16，且每条入线PCM每帧为128个时隙，则每个控制存储器的存储单元数量及每个存储单元大小至少为：
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According to Brown (1987), EA can be applied to foreign language teaching in four ways. Which one is not right?
Corder's Classification of Errors do not include
Brown defines errors simply as "unsuccessful bits of language".
Mistakes often occur when learners fail to perform their competence
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