To what do the H and B ratings of drawing pencils refer?
a. softness c. color
b. hardness d. both "softness" and "hardness"
D
both "softness" and "hardness"
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Provide the distances shown as A through E.
Distance B = ______________
(a) Suppose that an iron specimen, containing 0.09 atomic percent carbon is equilibrated at 720°C (993 K), and the rapidly quenched to 300°C (573 K). Determine the length of the time needed for one side of a plate?shape carbide precipitate to grow out by 10'3nm.
A Lambda of 0.97 means that the engine is operating ________ rich and has an air-fuel mixture of ________
A) 13%, 15.7:1 B) 0.3%, 14.1:1 C) 1%, 14.7:1 D) 3%, 14.3:1
A current magnetic relay opens and closes its contacts based on the ____.
A. current in the start winding B. voltage across the start winding C. voltage across the run winding D. current in the run winding