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【简答题】
说明通货紧缩对国民经济的影响。
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举一反三
【单选题】For a horizontal beam, there is no horizontal reaction under transverse loads; its internal forces are ____________.
A.
zero
B.
only bending moments
C.
only shearing forces
D.
bending moments and shearing forces
E.
axial forces and shearing forces
F.
bending moments and axial forces
【简答题】3 static equilibrium equations , , would be enough for the calculation of internal forces and reaction forces in a statically determinate structure.
【单选题】The support movements cause displacement with internal forces in a statically determinate structure; they cause displacment and internal forces in a statically inderterminate structure.
A.
would; no; would;
B.
would not; no; would not
C.
would ; no; would not
D.
would not; no; would
【简答题】某企业产品成本水平计划规定降低5%,而实际降低6%,那么企业完成完成计划任务的情况是?
【多选题】Internal forces are not shown on a free-body diagram because the internal forces _____.(Multiple choice question)
A.
sum to zero
B.
Are equal and opposite and they do not affect the calculations
C.
Are small
D.
Are not important
【简答题】#1_HWK_-_ internal forces.doc
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