What comparison does the professor make between the three types of flows? A. How often they occur. B. How fast they move. C. How much damage they cause. D. How far they travel.
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参考答案:
举一反三
【简答题】在下面的 结构中, 1 号 C 连有( ) 个 H ; 2 号 C 连有( ) 个 H ; 3 号 C 连有( ) 个 H ;4 号 C 连有( ) 个 H。