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(2.<的答案

(2.3A支座的竖直方向支座反力FAy=(  2分)

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2021-07-17 19:05
<span lang、"EN-US">2kN</span><span>(</span><span lang="EN-US">↑</span><span>)</span>
<span lang、"EN-US">2kN</span><span>(</span><span lang="EN-US">↓</span><span>)</span>
<span lang、"EN-US">4kN</span><span>(</span><span lang="EN-US">↑</span><span>)</span>
<span>4kN</span><span>(</span><span lang、"EN-US">↓</span><span>)</span>
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正确答案
4kN

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