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下图中甲图为南美洲局部地区图，为甲图中E地区的地形图。读图回答下列小题。 小题1:A地附近有色金属资源丰富，其开发困难的原因可能是： A．气候干旱，水源短缺，缺乏能源支撑 B．缺少天然海港，外运不便 C．地势平坦，水能资源缺乏 D．受寒流影响，阴天日子多 小题2:D地区葡萄种植的经济效益比C地区更好的原因可能是： A．C地区的阴天日子多，光照条件差 B．D地区昼夜温差更大，葡萄质量更好 C．C地区人烟稀少，市场需求量小 D．D地区冰雪融水量更大，水源灌溉更便利，单位产量更大 小题3:中B河流定期改向的原因可能是： 全区降水有明显的季节变化    ②全区全年高温，蒸发稳定 ③ E附近区域地势平坦           ④植被覆盖良好，水土流失少 A．②③ B．①③ C．①② D．②④
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举一反三
【判断题】投影面垂直面可分为铅垂面、正垂面两种。
A.
正确
B.
错误
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【判断题】土壤发生学是道库恰耶夫创立的,他从形成土壤的因素入手分析,即认为土壤是气候、生物、母质、地形和时间等综合作用的产物。()
A.
正确
B.
错误
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【简答题】medical technologies
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【判断题】土壤是气候、生物、母质、地形和时间等成土因素综合作用的产物,土壤是一个独立自然体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The Internet is based on which three key technologies?
A.
The Internet is based on which three key technologies?
B.
Client/server computing, packet switching, and HTTP
C.
Client/server computing, packet switching, and the development of communications standards for linking networks and computers
D.
TCP/IP, HTML, and HTTP
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【判断题】道库恰耶夫创立了土壤发生学，从形成土壤的因素入手分析，即认为土壤是气候、生物、母质、地形和时间等综合作用的产物。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】With multimedia technologies, people can do the following EXCEPT
A.
throwing away their radios and TVs.
B.
holding meetings or talking with others far away.
C.
learning new concepts and technologies more easily
D.
working more effectively with powerful office applications.
查看完整题目与答案
【判断题】投影面垂直面可分为铅垂面、正垂面两种。(还有侧垂面)
A.
正确
B.
错误
查看完整题目与答案
【多选题】Alternate dust control technologies
A.
Ventilated cutting drums
B.
Foam discharge from shearer drum
C.
Foam discharge from shearer drum
D.
Low-pressure inward-facing drum sprays
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【单选题】Which of the following is true of push and pull technologies?
A.
The early Web was characterized by pushing static information.
B.
In push technologies, organizations provide users with standardized information.
C.
In pull technologies, organizations provide users with customized information based on each user's individual profile.
D.
In pull technologies, users research, find, request, and retrieve the information they want.
查看完整题目与答案
相关题目：
【判断题】投影面垂直面可分为铅垂面、正垂面两种。
A.
正确
B.
错误
查看完整题目与答案
【判断题】土壤发生学是道库恰耶夫创立的,他从形成土壤的因素入手分析,即认为土壤是气候、生物、母质、地形和时间等综合作用的产物。()
A.
正确
B.
错误
查看完整题目与答案
【简答题】medical technologies
查看完整题目与答案
【判断题】土壤是气候、生物、母质、地形和时间等成土因素综合作用的产物,土壤是一个独立自然体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The Internet is based on which three key technologies?
A.
The Internet is based on which three key technologies?
B.
Client/server computing, packet switching, and HTTP
C.
Client/server computing, packet switching, and the development of communications standards for linking networks and computers
D.
TCP/IP, HTML, and HTTP
查看完整题目与答案
【判断题】道库恰耶夫创立了土壤发生学，从形成土壤的因素入手分析，即认为土壤是气候、生物、母质、地形和时间等综合作用的产物。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】With multimedia technologies, people can do the following EXCEPT
A.
throwing away their radios and TVs.
B.
holding meetings or talking with others far away.
C.
learning new concepts and technologies more easily
D.
working more effectively with powerful office applications.
查看完整题目与答案
【判断题】投影面垂直面可分为铅垂面、正垂面两种。(还有侧垂面)
A.
正确
B.
错误
查看完整题目与答案
【多选题】Alternate dust control technologies
A.
Ventilated cutting drums
B.
Foam discharge from shearer drum
C.
Foam discharge from shearer drum
D.
Low-pressure inward-facing drum sprays
查看完整题目与答案
【单选题】Which of the following is true of push and pull technologies?
A.
The early Web was characterized by pushing static information.
B.
In push technologies, organizations provide users with standardized information.
C.
In pull technologies, organizations provide users with customized information based on each user's individual profile.
D.
In pull technologies, users research, find, request, and retrieve the information they want.
查看完整题目与答案