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【单选题】
下列说法正确的是
A.
若线性规划问题具有可行解, 且可行域有界, 则该问题最多具有有限个数的最优解
B.
若线性规划问题的可行域可以延伸到无限, 则该问题目标函数值为无穷大
C.
线性规划问题的每一基解对应可行域的一个顶点
D.
线性规划模型中增加一个约束条件,可行域的范围一般将缩小,减少一个约束条件,可行域的范围一般将扩大
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参考答案：
举一反三
【多选题】医学生创业教育的意义包括
A.
全球化视野下发展中国医学教育的必然趋势
B.
社会发展的必然要求
C.
推动医学发展的不竭动力
D.
实现医学生自我价值的内在驱动力
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city.
查看完整题目与答案
【判断题】全球创业观察GEM项目的创业环境条件中不包括教育与培训此项条件。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city.
查看完整题目与答案
【单选题】A By the time you read these words, winter should have gone within the Northern Hemisphere (半球). But at its worst, this winter was unusually cold. Here in New York City on January 31, the low temperat...
A.
indicate how unusual the winter’s weather was
B.
suggest the north isn’t a suitable place to live
C.
remind people never to forget the past winter
D.
urge people to take action against the emergency
查看完整题目与答案
【单选题】( )是接近树干中心颜色比较深的部分,水分也较少。
A.
板材
B.
心材
C.
边材
D.
木制材
查看完整题目与答案
【单选题】在大学创业教育的实践中，我国大学积累了丰富的实践经验，归纳起来有三条，不包括下列各项中的（）。
A.
呼吁社会重视大学创业教育工作
B.
加强活动的有效指导
C.
建立有效的激励机制
D.
建立大学生科技创新和创业活动专项基金，建立科技创新活动和创业活动实践基地
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city,
查看完整题目与答案
【单选题】Ningbo is no longer the city _____ it was ten years ago. How beautiful it has become! [     ]
A.
which
B.
where
C.
that
D.
as
查看完整题目与答案
【单选题】M: Helen, why did you give up the job?W: It was too boring.Q: Why did Helen give up the job?
A.
She moved to another city.
B.
She was tired of the job.
C.
The working condition was poor.
D.
The job was too challenging.
查看完整题目与答案
相关题目：
【多选题】医学生创业教育的意义包括
A.
全球化视野下发展中国医学教育的必然趋势
B.
社会发展的必然要求
C.
推动医学发展的不竭动力
D.
实现医学生自我价值的内在驱动力
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city.
查看完整题目与答案
【判断题】全球创业观察GEM项目的创业环境条件中不包括教育与培训此项条件。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city.
查看完整题目与答案
【单选题】A By the time you read these words, winter should have gone within the Northern Hemisphere (半球). But at its worst, this winter was unusually cold. Here in New York City on January 31, the low temperat...
A.
indicate how unusual the winter’s weather was
B.
suggest the north isn’t a suitable place to live
C.
remind people never to forget the past winter
D.
urge people to take action against the emergency
查看完整题目与答案
【单选题】( )是接近树干中心颜色比较深的部分,水分也较少。
A.
板材
B.
心材
C.
边材
D.
木制材
查看完整题目与答案
【单选题】在大学创业教育的实践中，我国大学积累了丰富的实践经验，归纳起来有三条，不包括下列各项中的（）。
A.
呼吁社会重视大学创业教育工作
B.
加强活动的有效指导
C.
建立有效的激励机制
D.
建立大学生科技创新和创业活动专项基金，建立科技创新活动和创业活动实践基地
查看完整题目与答案
【单选题】听力原文：W: How was your trip to the Grand Canyon? M: It was excellent! We spent five days hiking along the Colorado River and exploring the side canyons. It was great to get out of the city and back to n...
A.
He hiked along the Colorado River.
B.
He explored the Colorado River.
C.
He camped along the Colorado River.
D.
He visited the Colorado city,
查看完整题目与答案
【单选题】Ningbo is no longer the city _____ it was ten years ago. How beautiful it has become! [     ]
A.
which
B.
where
C.
that
D.
as
查看完整题目与答案
【单选题】M: Helen, why did you give up the job?W: It was too boring.Q: Why did Helen give up the job?
A.
She moved to another city.
B.
She was tired of the job.
C.
The working condition was poor.
D.
The job was too challenging.
查看完整题目与答案
参考解析：
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