焊件的缝隙大小一般为 A．0.04～0.09mm B．0.1～0.15mm

昕玥2020-05-20 25

问题焊件的缝隙大小一般为A．0.04～0.09mmB．0.1～0.15mmC．0.16～0.2mmD．0.21～0.25mmE．0.3～0.35mm

选项

答案B

解析

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