Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?
Both pumps operating at the same speed and discharging into a common line.
Each pump operating at a different speed and discharging into a common line.
Both pumps operating at the same speed taking suction from a common line.
Each pump operating at a different speed and taking suction from a common line.
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