单项选择题
A.1 B.1.2 C.1.5 D.2
A.1 B.1.5 C.2 D.2.5
A.10mm B.20mm C.30mm D.40mm
A.-10﹪或+5﹪ B.-10﹪或+15﹪ C.-5﹪或+10﹪ D.-5﹪或+15﹪
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