Two major types of refrigeration systems are:
1. direct
2. ammonia
3. freon
4. indirect
a) 2, 3
b) 1, 3
c) 3, 4
d) 2, 4
e) 1, 4
Answer: E
Two major types of refrigeration systems are:
1. direct
2. ammonia
3. freon
4. indirect
a) 2, 3
b) 1, 3
c) 3, 4
d) 2, 4
e) 1, 4
Answer: E