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【单选题】
66A.
6
B.
66
C.
7
D.
9
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反馈参考答案：
举一反三
【简答题】线性规划的原问题的约束条件系数矩阵为 A ,则其对偶问题的约束条件系数矩阵为 。
【多选题】Which of the following statements are the benefits of a commonly used language?
A.
A bridge language makes it possible to communicate with people from different cultures.
B.
Owing to the communication in one commonly used language, traditions and customs of different cultures are transmitted.
C.
Intercultural communication activities, such as, international business, academic conferences, and political visits, etc. are helpful to spread one certain culture to other places.
D.
Because of the commonly used language, many local cultures disappear.
【多选题】Which of the following statements are the benefits of a commonly used language?
A.
A bridge language makes it possible to communicate with people from different cultures.
B.
Owing to the communication in one commonly used language, traditions and customs of different cultures are transmitted.
C.
Intercultural communication activities, such as, international business, academic conferences, and political visits, etc. are helpful to spread one certain culture to other places.
D.
because of the commonly used language, many local cultures disappear.
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