【Daily Question】Question from Issue 20151016
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. The main hazard of non-full flow after a long-distance pipeline crosses an elevation is ( ). A. No hazard B. Increased water hammer pressure when the oil flow velocity changes suddenly C. Accelerated internal corrosion of the pipeline D. Interruption of flow in the pipeline due to air obstruction 【Production and Management Division】Seeking moderators and technical discussants to join
D. Cause the pipeline to stop flowing due to air blockage
The main hazard of underflow after a long-distance pipeline crosses an elevation is (D. causing the pipeline to stop flowing due to gas blockage).
B Increases the water hammer pressure when the oil flow velocity changes suddenly
B: Increases the water hammer pressure when the oil flow velocity changes suddenly
The main hazard of non-full flow after a long-distance pipeline crosses an elevation is (B). A. No hazard; B. Increased water hammer pressure when the oil flow velocity changes suddenly; C. Accelerated internal corrosion of the pipeline; D. Interruption of flow in the pipeline due to air obstruction
The main hazard of subcritical flow after a long-distance pipeline crosses an elevation is (B)
B: Increases the water hammer pressure when the oil flow velocity changes suddenly
The main hazard of non-full flow after a long-distance pipeline crosses an elevation is (b). A. No hazard; B. Increased water hammer pressure when the oil flow velocity changes suddenly; C. Accelerated internal corrosion of the pipeline; D. Interruption of flow in the pipeline due to air obstruction
The main hazard of non-full flow after a long-distance pipeline crosses an elevation is (d). A. No hazard; B. An increase in water hammer pressure when the oil flow velocity changes suddenly; C. Acceleration of internal corrosion of the pipeline; D. Interruption of flow in the pipeline due to air obstruction
D、---------------------------------------------------------