试题与答案

大洋海水的平均盐度约为()。A、25 B、30 C、35 D、40

题型:单项选择题

题目:

大洋海水的平均盐度约为()。

A、25

B、30

C、35

D、40

答案:

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参考答案:空间是客观物质存在的形式。任何物体都存在于一定的空间之中,并且和周围的其它物体存在着空间上的相互位置关系,也就是空间方位关系。狭义的空间概念,即空间方位概念,是指对客观物体的相互位置关系...

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