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【单选题】
计算机直接参与控制的伺服系统是（）A.
模拟式伺服系统
B.
参考脉冲伺服系统
C.
采样数据系统
D.
以上都不是
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【简答题】Later, Darwin wrote a book about the
【简答题】A book review tells not only what a book is about，but also how successful it is at what it is trying to do.Professors often assign book reviews as practice in careful ytical(分析的) reading. As a rev...
【单选题】By saying that the book of 'Grail Bird' could 'easily be a book about the hunt for Bigfoot', the author means that______
A.
the book is merely about the hunt for impossible things.
B.
if the bird had not been discovered by the researchers, the book would have been like all the books about Bigfoot - only legends, no facts and truths.
C.
the hunt for the ivory-billed woodpecker enjoys similarity to the hunt for Bigfoot, because both of them are rare animals.
D.
the book is about the human obsession of finding legendary animals and about their guilty conscience facing nature.
【简答题】使用MMC有两种常规模式,分别是 和作者模式。
【简答题】使用MMC有两种常规模式,分别是_____和_____。
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