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【单选题】
1927年，党的（ ）通过《组织问题决议案》，第一次明确提出了“政治纪律”这个词，并首次选举产生了中央纪委的前身——中央监察委员会，开启了我们党历史上纪律检查机构的先河。A.
三大
B.
四大
C.
五大
D.
六大
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A.
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B.
The woman used to work for a lawyer.
C.
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D.
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【简答题】已知max Z=60x1+50x2,2x1+4x2≤80,3x1+2x2≤60,x1≤16,x1,x2≥0的最优解(x1,x2)=(10,15),则增加约束x1+2x2≤40的最优解是[ ]