____________ are required to prevent oil from spreading beyond the confines of a heater in the event of a ruptured tube.

____________ are required to prevent oil from spreading beyond the confines of a heater in the event of a ruptured tube.

____________ are required to prevent oil from spreading beyond the confines of a heater in the event of a ruptured tube.



a) Moats
b) Dikes
c) Tunnels
d) Rails
e) By-pass pipes


Answer: B


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