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14. A correct sequence of parts in upper threading is
a. spool, upper tension, thread take-up lever, upper thread
b. spool, upper thread guide, upper tension, thread take up, face plate needle
thread guide and ncedle.
c. Spool, upper tension, upper thread guide, thread take up,
needle
d. Spool, thread take up, upper tension, upper thread guide,
needle.​