A. 6; B. 0.044; C 4.4; D. 0.049.B

Freeti2020-05-20  4

问题

选项 A. 6;B. 0.044;C 4.4;D. 0.049.

答案B

解析[img]/upload/tiku/140/337392_1.jpg[/img]
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