A.n=2个,B=4.2m B.n=2个,B=3.5m C.n=4个,B=4

练习题库2022-08-02  19

问题 A.n=2个,B=4.2mB.n=2个,B=3.5mC.n=4个,B=4.2mD.n=4个,B=1.8m

选项 A.n=2个,B=4.2m
B.n=2个,B=3.5m
C.n=4个,B=4.2m
D.n=4个,B=1.8m

答案 B

解析
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