平面B与投影面相对位置正确的选项是( )A.mg src="http://p.a...

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【单选题】

平面B与投影面相对位置正确的选项是( )

mg src="http://p.ananas.chaoxing.com/star3/origin/5a7e5cf12ee602fc5ce43817a8be2148.jpg">正平面

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参考答案：

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【判断题】加热回流法测定水中COD，水样须在强酸性条件下回流2小时。

正确

错误

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【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English and turns it in to his American teacher without citing the Chinese author. His teacher does not speak...

正确

错误

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【单选题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English and turns it in to his American teacher without citing the Chinese author. His teacher does not speak...

True

False

Omitted

Null

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【判断题】穿西服的时候我们可以打颜色鲜艳点、花色多的领带,免得让人感觉整体比较单调( × )

正确

错误

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【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English, turns it in to his American teacher, and cites the Chinese author. This is not plagiarism.

正确

错误

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【判断题】Tom finds an article written in Chinese that fits his topic well, then he translates it to English, turns in into his American teacher, and cites the Chinese author. This is not plagiarism.

正确

错误

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【判断题】弯曲梁的变形特点是梁的轴线由直线变为一条曲线。

正确

错误

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【单选题】已知 u=311sin(628t-15° )V, 其频率为 Hz 。

100

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【简答题】所谓高级消费,主要是就和而言。