问题:
A.50050B.40050C.45050D.60050
问题:
A.帆布安全带B.尼龙安全带C.皮革安全带D.标准安全带
问题:
A.8%~21%B.18%~21%C.8%~20%D.18%~22%
问题:
A.4%B.0.4%C.0.5%D.1.4%
问题:
A.2~3mmB.3~4mmC.4~5mmD.5~6mm
问题:
A.10~12VB.12~24VC.16~24VD.24~36V
问题:
A.1.1B.1.2C.1.1~1.2D.1.3
问题:
A.0.1A.B.0.15A.C.0.1mA.D.0.15mA.
问题:
A.0.1B.0.1~0.2C.0.1~0.3D.0.1~0.4
问题:
A.0.1B.0.1~0.2C.0.1~0.3D.0.01~0.03