单项选择题
A.1946*976*3.2mm B.1948*976*3.2mm C.1948*974*3.0mm D.1946-974-3.2mm
A.≤1mm,1.5mm≤长度≤3mm B.≤0.5mm,1.5mm≤长度≤3mm C.≤3mm,1.5mm≤长度≤3mm
A.1-3mm,≤2个 B.1-4mm,1个 C.2-3mm,2个 D.1-2mm,3个