Choose all of the characteristics that apply to the locational and profile tolerances. there may be more than one correct answer. a. circularity b. perpendicularity c. angularity d. straightness e. cylindricity f. flatness g. total runout h. profile of a surface i. symmetry j. concentricity k. circular runout l. position m. profile of a line n. parallelism

Acompressor compresses a gas, a pump compresses a liquid. for a given pressure ratio, why does it take more work to compress a gas in a compressor than a liquid in a pump? a)- for a given pressure ratio the average specific volume for a gas is much higher than the average specific volume for a liquid. b)- there is no difference. the only difference is the amount of heat generated (not work) c)- for a given pressure ratio the average volurge for a gas is much higher than the average volume for a liquid. d)-there is no difference