【Weekly Topic】【HVAC Version 20160506】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. According to the definition of steady flow, which of the following statements is correct? ( ). A. The velocity distribution is the same at all cross-sections. B. All physical quantities at each point in space do not change over time. C. The streamlines are parallel straight lines. D. The flow changes over time according to a certain pattern. [HaiChuan Thanksgiving] -- Production Division [Production and Management Division] is seeking moderators and technical discussants to join us. Notice regarding the launch of the “I’m Saving Energy, Where Are You?” campaign in the Petrochemical Division
According to the definition of a steady flow, the correct statement is: (b).
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According to the definition of steady flow, which of the following statements is correct? (B). A. The velocity distribution is the same at all cross-sections. B. All physical quantities at each point in space do not change over time. C. The streamlines are parallel straight lines. D. The flow changes over time according to a certain pattern
According to the definition of steady flow, which of the following statements is correct? (B). A. The velocity distribution is the same at all cross-sections. B. All physical quantities at each point in space do not change over time. C. The streamlines are parallel straight lines. D. The flow changes over time according to a certain pattern
According to the definition of steady flow, which of the following statements is correct? (B). A. The velocity distribution is the same at all cross-sections. B. All physical quantities at each point in space do not change over time. C. The streamlines are parallel straight lines. D. The flow changes over time according to a certain pattern
A. The flow velocity distribution is the same at all cross-sections. B. All motion parameters at each spatial point do not change over time
B: All motion elements at each spatial point do not change over time