The effect of doubling the width of a beam,_____is to double the load that can b

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问题 The effect of doubling the width of a beam,_____is to double the load that can be sustained.

选项 A、other factors remain constant
B、other factors remained constant
C、the other factor being constant
D、other factors remaining constant

答案 D

解析语法类试题(分词)。other factors remaining constant是分词独立主格结构，在句中作伴随情况状语。A、B两项都是完整的句子，虽然在意思上讲得通，但从结构上无法与句中其他成分相连接，即没有关联词作连接手段；C项虽然从结构上可以接受，但在意义上being用得不够准确。

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