正确答案:

2.006

B

题目：按有效数字修约的规则，以下测量值中可修约为2.01的是

解析：解析：本题考查有效数字修约规则。

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延伸阅读的答案和解析：

[单选题]根据患者的年龄、性别、体质等状况来决定治疗用药的原则，此为（ ）。

因人制宜

[单选题]请根据以下内容回答 60～64 题

An organ of higher plants， usually subterranean and having several functions，including the absorption and conduction of water and dissolved minerals， food storage，and anchorage of the plant in the soil. It is distinguished from the stem by its structure，by the manner in which it is formed， and by the lack of such appendages as buds and leaves.

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