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【单选题】
以完成一定工作任务为期限的劳动合同是指用人单位与劳动者约定以某项工作的( )为合同期限的劳动合同。A.
长期
B.
永久
C.
终身
D.
一次性
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【简答题】根据上图完成题目 填入恰当的方位词 The school is 1 Grand Avenue The bank is 2 3 the school. The bank is 4 the school 5 the park. The hospital is 6 the school. The school is 7 8 9 10 First Street and Grand Avenue.
【单选题】A) The bank had fired the woman. B) Thewoman used to work for a lawyer. C) Thework in the bank is more interesting. D) Thewoman used to work in a bank.
A.
The bank had fired the woman.
B.
The woman used to work for a lawyer.
C.
The work in the bank is more interesting.
D.
The woman used to work in a bank.
【简答题】已知原问题 max z＝x1＋4x2＋3x3 的最优解为X*＝(0，0，4)T，最优值z*＝12，试用对偶理论求对偶问题的最优解。
【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[ ]
【简答题】已知max Z=3x1+4x2+x3,2x1+3x2+x3≤1,x1+2x2+2x3≤3,x1,x2,x3≥0的最优解为X=(1/2,0,0)',则第一个对偶约束的松驰变量等于[ ]
【简答题】句型转换。 1. The bank is next to the supermarket. (对画线部分提问) the bank? 2. There is a post office near here.(变为一般疑问句，并作否定回答) __ __ a post office near here? __ , ___ _ . 3. The hotel is in front of the resta...
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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[ ]