USCG USCG General Eng
Set 3 • Question #305 of 498
Launch Interactive Practice Room Which of the refrigerants listed is considered safe and ideal for most marine applications?
A
R-21
B
Ammonia
C
R-22
✓ Correct Answer
D
Sulfur dioxide
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Which of the refrigerants listed is considered safe and ideal for most marine applications', the standard operating requirement is: 'R-22'.
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