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【判断题】
采用机器人自动焊接转角焊缝时应考虑焊枪平滑过渡产生内旋现象对电弧稳定性的影响。()A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】It was found upon examination that nearly 15% of the packages____, which was obviously attributed to improper packing.
A.
was
B.
broken
C.
had been broken
D.
been already broken
【单选题】Die Vorlesung fiel aus, weil Anna gestern nach Deutschland __________ _________.
A.
gefahren ist
B.
gefahren war
C.
gefahren hatte
【简答题】理解主视图的选择。
【简答题】听力原文：The landscape of this part of Britain, with stretches and stretches of green fields and hedges, were rather enchanting. Most important of all, it was necessary for us to enjoy the fresh air in th...
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