2. 外语
  3. The effect of doubling the width of a beam, ______is to double the load that can be sustained.

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

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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 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中虽然从结构上可以接受，但在意义上being用得不够准确。全句译为："在其他情况保持不变的同时将横梁的宽度加大一倍，其结果是横梁的承受力也加大了一倍。"
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