Because of environmental concerns, it is no longer permissible to add ____________ to transformer oil.

Because of environmental concerns, it is no longer permissible to add ____________ to transformer oil.

Because of environmental concerns, it is no longer permissible to add ____________ to transformer oil.




a. Chelates
b. Anti-foaming substances
c. Chlorinated hydrocarbons
d. Freon
e. Organic compounds





Answer: C


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