单项选择题
A.M6 B.M8 C.M10 D.M12
A.0.2 B.0.3 C.0.4 D.0.5
A.5MM B.10MM C.15MM D.20MM
A.压平弹簧垫圈 B.不松动 C.拧紧 D.压平弹簧垫圈不松动
A.2 B.3 C.4 D.5
A.24V B.36V C.48V D.127V
A.5M B.15M C.30M D.50M
A.0.1M B.0.2M C.0.3M D.0.5M
A.4M B.6M C.8M D.10M