A.h=450mm B.h=500mm C.h=550mm D.h=600

题库2022-08-02  8

问题 A.h=450mmB.h=500mmC.h=550mmD.h=600mm

选项 A.h=450mm
B.h=500mm
C.h=550mm
D.h=600mm

答案 B

解析
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