For a deep or roughing cut the forward movement of the tool should be _________ for finishing cut.

When roughing cast iron, the mainly cooling cutting fluid should be added with sufficient and uniform flow .

When the same tool is used for roughing and finishing, the tool radius compensation function can be used to compensate the machining allowance. If the radius of the tool is r and the margin in the radial direction is Δ during finishing, the radius compensation amount during the last roughing is (). A: r B: Δ C: r+Δ D: 2r+Δ

__________, ________, and ________ are Mark Twain's works. A: Roughing It B: Moby Dick C: The Adventures of Tom Sawye D: The Jumping Frog

英译汉 Roughing, for which the metal removal rate, and consequently the cutting force, is high, but the required dimensional accuracy relatively low.

As a sequel to The Adventures of Tom Sawyer, ______ marks the climax of Mark Twain’s literary activity. A: Adventures of Huckleberry Finn B: Life on the Mississippi C: The Gilded Age D: Roughing It

_______ explores the scrupulous individualism in a world of fantastic speculation and unstable values, and gives its name to the get-rich-quick years of the post Civil War era. A: Innocents Abroad B: The Gilded Age C: Roughing It D: The Middle Years

______ explores the scrupulous individualism in a world of fantastic speculation and unstable values, and gives its name to the get-rick-quick years of the post Civil War era. A: Innocents Abroad B: The Gilded Age C: Roughing it D: The Middle Years

The<br/>heat treatment process (such as annealing, normalizing, etc. ) to<br/>improve the cutting performance of materials is usually arranged in<br/>(). A: After machining B: Before grinding C: Before cutting D: After roughing and before finishing