fashion

the following are parts of a sewing machine except?

• spool pin

• bodkin

• needle clamp

• feed dog

............................................used to hold the needle firmly to the needle bar

which part of the machine is used to regulate tension of stitches.....................

the following are examples of temporal stitches except

• diagonal stitch

• running stitch

• even stitch

• overlock stitch

........................the reaction between natural fibers upon chemicals

the following are examples of regenerated fibers except?

• viscose

• nylon

• triacetate

• acetate

......................combination of short molecular chains to make a long chain