Set 6 Practice Mode

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Q11811
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Which file used to give accurate size and high degree finish?
Q11812
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Which file used to give good finish to hard materials?
Q11813
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Which file is used for heavy reduction of materials?
Q11814
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Which type of washer used on the flat surface?
Q11815
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Which washer gives stiff resistance against the surface of the nut to prevent loosening?