单项选择题
A.35-45℃ B.30-45℃ C.35-40℃ D.30-40℃
A.≤0.8mm B.≤1mm C.≤1.8mm D.≤1.5mm
A.≤2mm B.≤1mm C.≤1.5mm D.≤0.5mm
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