单项选择题
A.20mm B.30mm C.40mm D.50mm
A.175μm B.190μm C.195μm D.210μm
A.100mm×100mm B.100mm×150mm C.150mm×150mm D.150mm×200mm
A.10% B.10%～20% C.20%～40% D.40%～70%
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