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【单选题】
约束对建筑构件的限制可以用约束反力代替,当进行力学分析时,约束反未知的,其大小取决于( )。A.
研究对象的选取
B.
约束反力的方向设置
C.
研究对象承受的荷载
D.
力学分析的方法
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反馈参考答案：
举一反三
【单选题】-- Have you moved into the new house? -- Not yet. The rooms __________. [ ]
A.
are painting
B.
are being painted
C.
are painted
D.
have painted
【单选题】--Have you moved into the new house? --Not, yet. The rooms ______ now.
A.
were painted
B.
have painted
C.
are being painted
D.
are painting
【简答题】B2B电子商务的组成要素有哪些?
【单选题】— Have you moved into the new house? — Not yet, the rooms _________. [ ]
A.
are being painted
B.
are painting
C.
are painted
D.
have been painted
参考解析：
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