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数控机床的组成部分包括( )

单选题
2021-07-17 23:29
A、输入输出装置、光电阅读机、PLC装置、伺服系统、多级齿轮变速系统、刀库
B、输入输出装置、CNC装置、伺服系统、位置反馈系统、机械部件
C、输入输出装置、PLC装置、伺服系统、开环控制系统、机械部件
D、输入输出装置、CNC装置、多级齿轮变速系统、位置反馈系统、刀库
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正确答案
B

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