单项选择题
A.80% B.50% C.18% D.30%
A.10倍 B.1.2倍 C.2倍 D.1.5倍
A.1/10 B.1/20 C.1/5 D.1/2
A.开口处厚度最薄至8mm B.整体笔记本厚度是33.4mm C.最厚处不超过23mm D.整体厚度不超过21mm
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