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【简答题】
MIDI文件记录的不是可供直接播放的波形信息，因此在播放MIDI音乐时必须通过合成器将它转换成波形信号。根据乐音生成的原理，PC机声卡使用的MIDI合成器分为两类：一类是数字调频(FM)合成器，还有一类是【 】合成器。
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举一反三
【单选题】According to the passage, what is one major criticism students often make of published research?
A.
The research has been done in unimportant fields.
B.
The researchers did not adequately establish the relationships involved
C.
The researchers failed to provide an appropriate summary.
D.
The research has not been written in an interesting way.
【单选题】According to the candidate himself，which of the following is not his strength?
A.
His calmness．
B.
His good sense of humor．
C.
His carefulness．
【简答题】入库作业的工作质量,直接影响到( )以及( ) 的顺利进行,而 ( ) 是入库作业的开始。
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