问题
单项选择题
磁偏吹最弱的焊机是（）
A、弧焊变压器
B、弧焊发电机
C、弧焊整流器
D、逆变直流焊机
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
磁偏吹最弱的焊机是（）
A、弧焊变压器
B、弧焊发电机
C、弧焊整流器
D、逆变直流焊机
参考答案：A
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My name is Rich . I'm fourteen years old . I 'm __1__ in a middle school . My school is nice and clean. There are 30 students in my class . It's __2__ today . My classmates and I are __3__ a good time on the beach .It's a nice place .The water is blue and clear . Many birds are __4__ over the sea . Many people are __5__ . Some boys are __6__ football . Some people are __7__ on the beach . A girl is __8__ pictures on a chair .Another girl is __9__ photos . I'm __10__ to you ! What are you doing ? I hope you can write to me soon . Best wishes! Rich |