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【简答题】
试求图8-4a所示单元体的主应力,并画出主应力单元体。假设该单元体的边长为单位1,试求其对角线AB转过的角度及其长度改变量,已知材料的弹性模量E=200GPa、泊松比μ=0.3。
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B.
增加外汇储备的成本与风险
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存在引发中国通货膨胀的风险
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【单选题】Listening Section 2 Conversation 1 (After the conversation, there are questions 11 and 12 . Both the conversation and the questions will be read twice. Note: There is only one correct answer to each q...
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B.
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The man wants to employ the woman.
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A.
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