Report the amount of oil in the electric heater. Who knows? Please tell me!
Reward score: 5- analysis time: 2009-12-421:1.
Questioner: Heat transfer oil is generally aromatic or naphthenic heat transfer oil.
1 Respondent: Big Head Physics-Level 4 2009- 1 1-28 20:47
Let me comment >>
The questioner's evaluation of the answer: thank you!