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【单选题】
2020年1月以来,新型肺炎病毒蔓延许多国家和地区,我国卫生部及时组织广大医学工作者结合长期以来的中医药学经验进行有效防控。下列著作中将各类药物分类、被誉为“东方药物巨典”的是A.
《黄帝内经》
B.
《千金方》
C.
《本草纲目》
D.
《伤寒杂病论》
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【单选题】The internal forces of the members of a truss should be ___________.
A.
only axial forces
B.
axial forces and shearing forces
C.
only shearing forces
D.
only bending moments
E.
axial forces and bending moments
F.
axial forces, shearing forces and bending moments
【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?
【单选题】Internal forces are not included in an equation of motion analysis because the internal forces are_____
A.
equal to zero.
B.
equal and opposite and do not affect the calculations.
C.
negligibly small.
D.
not important.
【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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