Decide whether each statement is true or false and circle the letter in the right$-$hand column that indicates your choice.

$11.$ A straight$-$tail lathe dog is best suited for precision turning between centers.

$12.$ A standard$-$type toolholder has a back rake of $15$ to $20.$

$13.$ A left$-$hand offset toolholder is designed to machine work from right to left.

$14.$ A right$-$hand offset toolholder is designed to machine work close to the chuck.

$15.$ Carbide cutting tools should have a back$-$rake angle of $15$ to $20.$

$16.$ Form$-$relieved threading tools must only be ground on the top of the cutting surface.

$17.$ The standard, or round$-$type, tool post is best suited for carbide cutting tools.

$18.$ Most turret$-$type tool posts can accommodate only two different cutting tools.

$19.$ Quick$-$change toolposts usually have a dovetail for accurate repositioning of the cutting tool.

$20.$ Accuracy of size is maintained with a quick$-$change toolpost by setting the cutting tool to the work and checking the size after each cut.

SCORE $q,$

$20$