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[Engineering Version] Daily Question 20180609

2018-06-15View Original

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Which of the following stairs does not belong to the classification based on the stair plan shape? ( ) A. Double-flight parallel stairs B. Double-separated parallel stairs C. Corner stairs D. Indoor stairs Answer: D 【Explanation】Based on their planar layout, stairs can be classified into single-flight straight stairs, double-flight straight stairs, double-flight parallel stairs, three-flight stairs, double-separated parallel stairs, double-combined parallel stairs, corner stairs, double-separated corner stairs, intersecting stairs, scissor stairs, spiral stairs, etc.

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