What fixtures need to be shielded for Light Pollution Reduction?

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试卷: LEED v4 OM模拟题D卷英文[查看]
What fixtures need to be shielded for Light Pollution Reduction?
在降低光污染的要求中，什么样的灯具需要有灯罩

A: Fixtures with a light spill 90 degrees or less from horizontal 照射角度小于90°的灯具
B: Fixtures with a mean lamp lumen of 2,500 or more 照度高于2500流明的灯具
C: Fixtures with an initial lamp lumen of 2,500 or less 照度低于2500流明的灯具
D: Fixtures with more than 70 picograms of mercury per lumen hour 汞含量低于70 pg/流明的灯具

参考答案: B

本题解释:
选择B，本题解释A.90 degrees or more from horizontal need to be shielded. B.This is correct. C.Look at the mean lamp lumen (not the initial lumen) on documentation for credit compliance. D.This is a synergy with the purchasing credit for lamps.