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【判断题】
形状公差带(轮廓度除外)的特点是不涉及基准,无确定的方向和固定的位置。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】为了防止邮箱邮件爆满而无法正常使用邮箱，您认为应该怎么做() A看完的邮件就立即删除 B定期删除邮箱的邮件 C定期备份邮件并删除 D发送附件时压缩附件
【简答题】阅读理解。 A Trip to the Forest One day Bob took two of his friends into the mountains. They put up their tents and then rode off to a forest to see how the trees were growing. In the afternoon when they w...
【简答题】判断正误，正确（T），错误（F）。 Bob and Jim once worked in the same factory. One day, Bob lent him ten dollars, but then Jim left his work and went to work in another town without going back to the factory. Bob had...
【简答题】阅读理解。 A Trip to the Forest One day Bob took two of his friends into the mountains. They put up their tents (帐篷) and then rode off to a forest to see how the trees were growing. In the afternoon when t...
【单选题】运用收益成本比对公用事业项目进行经济评价,收益成本比是( )
A.
项目的收益与成本之比
B.
项目的收益年金与成本年金之比
C.
项目的收益终值与成本终值之比
D.
项目的收益现值与成本现值之比
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