下列哪个例子属于负反馈圈（negative feedback loop）例子？

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试卷: LEED v4 GA模拟题A卷中文[查看]
下列哪个例子属于负反馈圈（negative feedback loop）例子？What is an example of a negative feedback loop?
A: 较暖的大气融化更多的冰，改变地球表面反射率，进一步让大气变的更暖 A warmer atmosphere melts more ice, changing the Earth’s albedo which further warms the at
B: 热岛效应加剧要求更多的机械冷却，从而产生更多的温室气体排放量导致更多的冷却需求 Increased heat islands require more mechanical cooling which generates more greenho
C: 恒温计（thermostat）通过温度反馈指示系统，当到达指定温度限值，系统适时关闭 A thermostat whose temperature feedback indicates to the system when to turn of
D: 温暖的海洋释放温室气体，而温室气体又让海洋变的更暖 Warming oceans releasing greenhouse gasses which would warm the ocean even more

参考答案: C

本题解释:
正确答案：C
系统解析: 暂无解析
C:A negative feedback loop is a system where the output may signal the system to stop changing. Here the thermostat tells the system to stop running if a certain temperature threshold is reached.

A:This is a positive feedback loop.
B:This is a positive feedback loop.
D:This is a positive feedback loop.