【单选题】
采用___方法焊接焊件的焊接变形较小。
A. 氧～乙炔气焊
B. 等离子弧焊
C. 手工电弧焊
D. 氧～氢气焊
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答案
B
解析
暂无解析
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【多选题】
脚手架中关于纵向水平杆下列正确的是___。
A. 同一步架中，内外两根纵向水平杆的对接头应尽量错开一跨
B. 两根纵向水平杆的对接接头必须采用对接扣件连接
C. 凡与直柱相交处均必须用直角扣什与立杆固定
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根据电力安全事故(以下简称事故)影响电力系统安全稳定运行或者影响电(热力)正常供应的程度，事故分为___。
A. 特别重大事故
B. 重大事故
C. 较大事故
D. 一般事故
【多选题】
为了加强电力安全事故的应急处置工作，规范电力安全事故的调查处理，___电力安全事故损害，制定电力安全事故应急处置和调查处理条例。
A. 伪造
B. 欺瞒
C. 隐匿
D. 毁灭
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( ) 26. Where does the writer of "The little Prince" come from?
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( ) 27. What does the prince do after the fox tells him a secret?
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