单项选择题
A.7.70mm和7.80mm B.7.80mm和7.70mm C.7.80mm和7.80mm D.7.80mm和7.90mm
A.10.00~11.00mm和10.50~11.00mm B.11.00~12.00mm和10.50~11.00mm C.11.25~12.25mm和10.50~11.00mm D.11.00~12.00mm和11.50~12.00mm
A.5mm B.10mm C.15mm D.20mm