单项选择题
A.5% B.7% C.8% D.10%
A.检测杆 B.动作杆 C.尖端杆 D.表示杆
A.0.2～0.4mm B.0.3～0.5mm C.0.4～0.6mm D.0.5～0.7mm
A.40～44mm B.41～44mm C.42～44mm D.43～44mm
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