美国麻省理工大学：《结构分析与设计技术》教学资源（讲义）CQ1.pdf_大学文库

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The work of the external forces in the spring system of the figure is given by W=B*(U1+U2+U3)(2) W=P1*U1+P2米U2+B米U3(3) None of the above statements

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Concept Question ∧∧∧ The work of the external forces in the spring system of the figure is given by W=B*(U1+U2+U3)(2) W=P1*U1+P2米U2+B米U3(3) None of the above statements Statement Statement(2) Statement(3) DKDU

++++ ++++ ++++ ++++ ++++ Concept Question ++++ ++++ ++++ ++++ ++++ kb kc kd ke P3 P1 P2 ka u1 u2 u3 The work of the external forces in the spring system of the figure is given by: W = P3 ∗ U3 (1) W = P3 ∗ (U1 + U2 + U3) (2) W = P1 ∗ U1 + P2 ∗ U2 + P3 ∗ U3 (3) • ++++ None of the above statements • ++++ Statement (1) • ++++ Statement (2) • ++++ Statement (3) • ++++ DKDU

answer The correct answer to the concept question

++++ ++++ ++++ ++++ ++++ Answer ++++ ++++ ++++ ++++ ++++ The correct answer to the concept question is: ++++

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