【单选题】【消耗次数：1】
_____ drills that have no real topic have to remain as they are.
①
Manufacture
②
Manipulative
③
Manipulate
④
Manifest
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①
had he realized
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随机题目
【单选题】
图示结构，若将均布荷载q用其合力ql代替（如虚线所示），则所产生的反力（ ）。<img src="20190717/1563351831241077.jpg" title="1563351831241077.jpg" alt="建筑力学图片13章1节3.jpg"/>
①
都不发生变化
②
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③
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④
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