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【单选题】
对于线性规划问题存在基B,变量为零,求得满足AX=b的解,称为B的:A.
基本解
B.
可行解
C.
基本可行解
D.
最优解
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反馈参考答案：
举一反三
【多选题】在独立方案中，选择某一个方案并不排斥选择另一个方案。就一组完全独立的方案而言，其存在的前提条件有( )。
A.
投资资金来源无限制
B.
各投资方案需要的人力、物力均能得到满足
C.
每一方案是否可行，需要考虑其他方案的影响
D.
投资资金无优先使用的排序
【单选题】下列是一些同学学习了《和朋友在一起》后的感受和打算,你认为正确的是 1小强:我要积极融入朋友圈,与朋友同行,互相学习,共同提高 2小明:我要维护自尊,他们不理我,我也就不去理他们 3小刚:我要珍惜朋友的友谊,朋友圈越大越好,朋友不管好坏,越多越好 4小勇:我要反思自己的交友行为,学会处理在与朋友交往中遇到的问题
A.
①②
B.
②③
C.
①④
D.
③④
【单选题】The balance of payments used to indicate the long-term trend of a country's balance of payments is ( ).
A.
Trade balance of goods
B.
Basic balance
C.
Current account balance
D.
Official settlement balance
【单选题】An improvement in a country's balance of payments means a decrease in its balance of payments deficit, or an increase in its surplus. In fact we know that a surplus in a balance of payments
A.
is always beneficial.
B.
is usually beneficial.
C.
is always harmful.
D.
is sometimes harmful.
E.
is never harmful.
【单选题】An improvement in a country's balance of payments usually means a decrease in its balance of payments deficit, or an increase in its surplus. In fact we know that a surplus in a balance of payments ( ...
A.
is always beneficial.
B.
is always harmful.
C.
is never harmful.
D.
is sometimes harmful.
【单选题】An improvement in a country's balance of payments means a decrease in its balance of payments deficit, or an increase in its surplus. In fact we know that a surplus in a balance of payments
A.
is always beneficial.
B.
is usually beneficial.
C.
is sometimes harmful.
D.
is always harmful
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