____ are used for holding and turning nuts, bolts, cap screws, plugs, and various threaded parts.

a. Screwdrivers
b. Hammers
c. Drills
d. Wrenches


d. Wrenches

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A throttling valve in a refrigerator receives saturated liquid R-134a at 800 kPa, and exhausts the R-134a as a saturated mixture at 180 kPa.

(a) Assuming no changes in kinetic energy of the R-134a, determine the quality of the exiting mixture. (b) For the same inlet conditions, use your throttling device model and plot the exit quality of the R-134a as the exit pressure is varied between 100 kPa and 700 kPa. Given: P1 = 800 kPa; x1 = 0 (saturated liquid); P2 = 180 kPa R-134a (Take State 1 as the inlet, State 2 as the outlet.) Assume: Q?=W?=0. For a throttling valve, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?KE = ?PE = 0

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There are more cats than dogs in the United States

Indicate whether the statement is true or false

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The Ottoman Empire’s perilous financial situation allowed the French to gain control of which North African territory?

a. Libya b. Morocco c. Algeria d. Tunisia

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The size of the ____should be given much consideration, since it is important for the appearance and operation of the fireplace.

A. hearth B. ash dump C. ash pit D. fireplace opening

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