Core (Universal)第 3 / 240 题
What is the Montreal Protocol?
a.A U.S. law that sets minimum wages for HVAC technicians
b.A voluntary industry pledge to recycle scrap metal
c.A manufacturer standard for compressor efficiency
d.An international treaty to phase out the production of ozone-depleting substances
解析
The Montreal Protocol, adopted in 1987, is the international treaty under which nations agreed to phase out the production and consumption of ozone-depleting substances such as CFCs and HCFCs. It is not a wage law, a compressor efficiency standard, or a metal recycling pledge. U.S. obligations under this treaty are carried out through the Clean Air Act.
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