B) tanks that hold less than 200 gallons.
C) farm and residential tanks that hold 2,000 gallons or less of motor fuel used for noncommercial purposes.
D) all of these.
Some types of storage tanks are exempt from the federal regulations on USTs, including: A) tanks that store heating oil burned on the premises.
Underground Storage Tank systems are tanks along with the underground piping that has at least 10% of their total volume underground.
Some of the storage tanks that are exempt from the federal regulations on USTs are;
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The federal UST regulations typically do not cover tanks that store heating oil used on site, tanks that hold less than 200 gallons, and farm and residential tanks that hold 2,000 gallons or less of motor fuel for noncommercial uses.
The question pertains to certain types of storage tanks that are exempt from federal regulations called USTs (Underground Storage Tanks). These tanks are used to store regulated substances, typically petroleum and hazardous substance. However, not all tanks fall under these regulations. For instance, tanks that store heating oil used on the premises where it is stored, tanks that hold less than 200 gallons, and farm and residential tanks that hold 2,000 gallons or less of motor fuel for noncommercial uses, are not governed by these federal UST regulations. Hence, the correct answer is D) all of these.
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b) cooled
c) warmed
d) unchanged
When a refrigerant condenses, the surrounding air is warmed. The correct option is c.
The refrigerant is a working fluid in a refrigerator which is capable of changes of phase at low temperatures.
A refrigerator undergoes a vapor compression refrigeration cycle using the working fluid.
When a refrigerant condenses, the surrounding air is warmed.
Thus, the correct option is c.
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