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- 2021-10-22
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RC:
Volcanic plains and rises on Venus feature landforms = basaltic lava flows + canali-long (from 500 to 6800 kilometers in length, uniform width) ≠ basaltic lava (cools too quickly) → identifying fluid for such distances under unique atmospheric conditions
Baker et al.'s 1992 research → canali = a low-viscosity fluid = exceptionally hot / melting point near Venus' surface temperature → basaltic and komatiitic lavas (quick solidification) ≠ canali → ②theories = insulating covers or subsurface flows ⇒ retarding cooling process → meandering paths of the canali (unclear)
Other potential canali-forming liquids: liquid sulfur, carbonatite lavas, and water (cooler climate) → Liquid sulfur evaporates too swiftly → however, Carbonate-rich lavas√ (low viscosity, high erosive potential, and suitable melting temperatures) → from burial and weathering of basalt rocks near the planet's surface
BBACC为啥是E啊...噢好像没完全否定掉这个...那就算排除的出来,E为啥对啊 不懂了
CR:
1. B
目标:让运木材不会对环境造成影响
方案:用直升机运木材
1. 方案难以达成目标
直升机会对环境造成影响
2. 方案本身实施困难
直升机不能运/运很麻烦/很贵
(A) 加强
(B) 直升机很贵,合理
(C) 本来就要砍树….无所谓吧 应该不算削弱
(D) 和直升机无关
(E) 加强
2. B
已知:
1. 修了自行车专用车道
2. 有车道之后,骑自行车的出门的次数多了,大多数人也都在自行车道上骑车
3. 在主干道骑车的人没减少
(A) 总人口增加和骑车的人选道没关系
(B) 是加强,否削弱,可以
(C) 不能解释没减少
(D) 如果不付钱,就不能解释为什么主干道没减少了
(E) 天气无关
DI:
BBBB(怎么全b了笑死)
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