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根据下列材料和“长江水系略图”,回答问题。 材料: 据国家地震台网测定,于北京时间5月12日14时28分,四川省阿坝藏族羌族自治州汶川县(31°N、103°E)发生里氏8.0级强烈地震。中国地质调查局初步监测和评价认定,这次汶川地震是板块运动造成青藏高原快速导致的。这次地震除了直接造成房倒屋塌、桥梁断落、水坝开裂外,引发了山体滑坡、泥石流等次生灾害,给地震灾区人们的生命和财产造成了巨大损失。 (1)长江上、中、下游的分界点是:A_________;B_________ (2)长江水能资源最丰富的河段是_________。我国在长江干流上已经开发建设的水电站C是________。 (3)我们在开发长江水能资源的同时,更应该注意保护长江流域的生态环境。目前长江上游的主要环境 问题是_________,解决措施主要有_________。 (4)四川省汶川县位于长江支流______的上游,地处我国主要地形区中____________盆地的过渡 地带,地势陡峻,交通不便,给这次地震救援带来了很大的困难。 (5)汶川这次发生大地震的主要原因是 [     ] A、美洲板块和太平洋板块碰撞的结果 B、亚欧板块和美洲板块碰撞的结果 C、印度洋板块和亚欧板块碰撞的结果 D、非洲板块和太平洋板块碰撞的结果 (6)我国地处世界两大火山地震带:_________________带和_____________带,是一个多地震的国家。 如果破坏性地震发生时你身处其中,请问你应该选择__________(自救方式),尽量避免发生伤害。
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【单选题】Do you find getting up in the morning so difficult that it is painful? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. Duri...
A.
Unawareness of energy cycles.
B.
Familiar monologues.
C.
A change in a family member's energy cycle.
D.
Attempts to control the energy cycle of other family member.
【单选题】使用( )修改器可以使物体表面变得光滑。
A.
面挤出
B.
蒙皮
C.
网格平滑
D.
编辑网格
【单选题】Do you find that getting up in the morning is so difficult that it's painful? This might be called laziness, but Dr. Newman has a new explanation. He has proved that everyone has a daily energy cycle....
A.
he is a lazy person
B.
he refuses to admit that his own energy is low
C.
he is not sure when his energy is low
D.
he is at his peak in the afternoon or evening
【单选题】Do you find getting up in the morning so difficult that it's painful? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. Durin...
A.
he is' hot'
B.
he refuses to follow his own energy cycle
C.
he is not sure when his energy is low
D.
he is very energetic in the afternoon or evening
【简答题】A.外生性或膨胀性生长 B.浸润性生长 C.二者均有 D.二者均无 良性肿瘤的生长方式多为 A. B. C. D.
【单选题】使用( )修改器可以使物体表面变得光滑。
A.
曲面
B.
曲面变形
C.
面片变形
D.
面拉伸
【单选题】Do you find getting up in the morning so difficult that it's painful?This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. During...
A.
he is a lazy person
B.
he refuses to follow his own energy cycle
C.
he is not sure when his energy is low
D.
he is at his peak in the afternoon or evening
【单选题】Do you find getting up in the morning so difficult that it's painful? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. Durin...
A.
he is at his peak in the afternoon or evening
B.
he is not sure when his energy is low
C.
he refuses to follow his own energy cycle
D.
he is a lazy person
【单选题】良性肿瘤的生长方式主要为()
A.
膨胀性生长
B.
浸润性生长
C.
外生性生长
D.
外生性生长和膨胀性生长
E.
膨胀性生长和浸润性生长
【判断题】半导体的电导率与材料内单位体积中所含的电荷载流子的数目有关。电荷载流子的浓度越高,其电导率越高。
A.
正确
B.
错误
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