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【简答题】
现要求设计一座简支梁式桁架结构(桥梁或者屋顶结构),跨径12m,桁高2m,已知节点荷载的作用位置和大小: x=0m ,p=0.5kN; x=2m ,p=1kN; x=4m ,p=1kN; x=6m ,p=1kN; x=8m ,p=1kN; x=10m ,p=1kN; x=12m ,p=0.5kN。
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【简答题】What is still uclear about the case?
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less, more
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A.
where
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which
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of which
D.
to which
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A.
n uclear
B.
non nuclear
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D.
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Drinking w ater s oftening
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N uclear waste cleanup
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Oxygenerator
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A.
n uclear energy
B.
geothermal energy （地热能）
C.
wave energy
D.
coal
E.
natural gas
F.
hydraulic power （水力）
G.
tidal energy（潮汐能）
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