What type of system is more sustainable?

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试卷: LEED GA模拟题E[查看]
What type of system is more sustainable?

A: Neutral system
B: Dynamic system
C: Closed system
D: Open system

参考答案: C

本题解释:
Notes:

Reference: GBES LEED Green Associate Study Guide
A:This term is not used in green building.
B:This term is not used in green building.
C:A closed system is a system with a closed loop, and is thought of as more sustainable. For example, plants growing in a field, grow, produce oxygen, take in water, then die and decay which helps plants grow. Closed systems can be linked so one system uses the byproducts of another.
D:An open system is a system that constantly takes in items from outside the system , uses them and then releases them as waste. This system has no feedback loop. Think of a normal home where groceries, products, or water come into the home, are used and then released as waste water or garbage.