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【简答题】
所有的有理数都是实数；所有的无理数也是实数；虚数不是实数。因此，虚数既不是有理数也不是无理数． (1)将上述命题符号化。 (2)用演绎法证明其结论是否正确。
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举一反三
【简答题】听下面一段对话，回答第1-2小题。 1. Which activity does the woman dislike? A. Sailing B. Fishing C. Swimming 2. Where will the speakers stay? A. In a cabin B. In a big hotel C. In a tent
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【判断题】EH型双滚筒梳栉横移机构的上滚筒为E型滚筒,用于控制地梳。
A.
正确
B.
错误
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【简答题】听下面一段材料，回答第1-2题。 1. Which activity does the woman dislike? A. Sailing. B. Fishing. C. Swimming. 2. Where will the speakers stay? A. In a cabin. B. In a big hotel. C. In a tent.
查看完整题目与答案
【单选题】企业信息系统战略规划的主要内容是( )
A.
描述功能与范围
B.
确定地位及目标
C.
描述运行环境
D.
规划软、硬件配置
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【单选题】治疗气性坏疽应先用大剂量
A.
庆大霉素
B.
红霉素
C.
氯霉素
D.
青霉素
E.
链霉素
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【单选题】Which activity does Mr. Liu advise Li Ming to join?
A.
Lectures.
B.
Top Ten Singers.
C.
Sports meeting.
D.
Musical performance.
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【单选题】Which activity does not belong to The Dragon Boat Festival?
A.
racing dragon boats
B.
hanging lanterns
C.
hanging calamus and wormwood on doors or windows
D.
drinking realgar wine
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【判断题】所有影片都会将主题安排在高潮部分展现。
A.
正确
B.
错误
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【单选题】Which activity does not focus on listening for specific information?
A.
listening to label a diagram
B.
listening to fill in a form
C.
listening to decide on context
D.
listening to the sense of every word of the important news
查看完整题目与答案
【单选题】After making the difference of the two types of work of speaking activities, controlled accuracy work and free fluency work. Which activity does not belong to the latter work?
A.
Decision-taking activities
B.
Script-based conversations
C.
Group objects
D.
Discussions and debates
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【简答题】听下面一段对话，回答第1-2小题。 1. Which activity does the woman dislike? A. Sailing B. Fishing C. Swimming 2. Where will the speakers stay? A. In a cabin B. In a big hotel C. In a tent
查看完整题目与答案
【判断题】EH型双滚筒梳栉横移机构的上滚筒为E型滚筒,用于控制地梳。
A.
正确
B.
错误
查看完整题目与答案
【简答题】听下面一段材料，回答第1-2题。 1. Which activity does the woman dislike? A. Sailing. B. Fishing. C. Swimming. 2. Where will the speakers stay? A. In a cabin. B. In a big hotel. C. In a tent.
查看完整题目与答案
【单选题】企业信息系统战略规划的主要内容是( )
A.
描述功能与范围
B.
确定地位及目标
C.
描述运行环境
D.
规划软、硬件配置
查看完整题目与答案
【单选题】治疗气性坏疽应先用大剂量
A.
庆大霉素
B.
红霉素
C.
氯霉素
D.
青霉素
E.
链霉素
查看完整题目与答案
【单选题】Which activity does Mr. Liu advise Li Ming to join?
A.
Lectures.
B.
Top Ten Singers.
C.
Sports meeting.
D.
Musical performance.
查看完整题目与答案
【单选题】Which activity does not belong to The Dragon Boat Festival?
A.
racing dragon boats
B.
hanging lanterns
C.
hanging calamus and wormwood on doors or windows
D.
drinking realgar wine
查看完整题目与答案
【判断题】所有影片都会将主题安排在高潮部分展现。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which activity does not focus on listening for specific information?
A.
listening to label a diagram
B.
listening to fill in a form
C.
listening to decide on context
D.
listening to the sense of every word of the important news
查看完整题目与答案
【单选题】After making the difference of the two types of work of speaking activities, controlled accuracy work and free fluency work. Which activity does not belong to the latter work?
A.
Decision-taking activities
B.
Script-based conversations
C.
Group objects
D.
Discussions and debates
查看完整题目与答案