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【单选题】
钻桩终检查合格后,应迅速清。清的方法有很多种,其中( )较为彻底。A.
抽浆法
B.
换浆法
C.
掏渣法
D.
喷射法
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举一反三
【简答题】三阶方阵A的特征值为1，-1，2，则【图片】的特征值为（ ）
【简答题】三阶方阵A特征值为3，－1，2，则【图片】的特征值为 .
【简答题】A．Because they are alike. B．Because the man's briefcase has a lock. C．Because the man's briefcase is smaller. D．Because she doesn't have a briefcase.
【简答题】A．Because she helped him in the kitchen． B．Because it's the girl's birthday． C．Because she can't cook well． D．Because her father enjoys cooking．
【简答题】A．Because it serves only a few specialties. B．Because it's too crowded. C．Because it's too costly. D．Because the service is too slow.
【简答题】A．Because it serves only a few specialties. B．Because it's too crowded. C．Because it's too costly. D．Because the service is too slow.
【简答题】A．Because it serves only a few specialties. B．Because it's too crowded. C．Because it's too costly. D．Because the service is too slow.
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