试题与答案

常见的跨膜物质转运形式有____、____、____、____、____。

题型:填空题

题目:

常见的跨膜物质转运形式有____、____、____、____、____。

答案:

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years old. His sister's name is Rose. She is older than Jim. His brother, Bob is younger than Jim.

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( ) 1. Jim is an American.

( ) 2. Jim's father has 3 sons.

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( ) 4. Jim's sister is younger than Jim's brother.

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( ) 6. The two boys look the same.

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为了研究拉力做功的快慢,某同学设计了如下的实验进行研究。他把不同质量的物体匀速提升不同的高度,同时测出相应的所用时间,记录的实验数据如下表所示。已知表一所示实验拉力做功最快,表三所示实验做功最慢。每一表格所示实验做功快慢相同。

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