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【判断题】
如果使用两种不同的含有α-H的醛,则可得到四种羟醛缩合产物的混合物,不易分离,无制备意义。A.
正确
B.
错误
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【简答题】最大超调量只决定于阻尼比ξ ,ξ 越小 , 最大超调量越 。
【简答题】Listen to these two people discussing and make a brief note of what present(s) they decide to buy for their family.
【简答题】Listen to these two people discussing and make a brief note of what present(s) they decide to buy for their family.
【简答题】最大超调量只决定于阻尼比ξ ,ξ 越小 , 最大超调量越 (大/小)
【简答题】Listen to these two people discussing and make a brief note of what present(s) they decide to buy for their family.
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