To log out of UNIX/Linux (Bourne, Korn, or Bash shells) you can enter exit on the command line or press ____.

A. Ctrl+l
B. Ctrl+g
C. Ctrl+x
D. Ctrl+d


Answer: D

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Dewatering of an excavation, as described in this text, can be done by the

A) pit method. B) well-point method. C) sump method. D) A and B. E) B and C.

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The process of desalinization has become critical in supplying many parts of the world with freshwater

Indicate whether the statement is true or false

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For a deep vacuum to complete, the system pressure should hold:

A) Somewhere between 5,001 and 10,000 microns. B) Below 500 microns. C) Somewhere between 1,500 and 5,000 microns. D) Above 500 microns.

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Determine the specific gravity of the following materials: gold (p = 1208 lb/ft^3), platinum (p = 1340 lb/ft^3), silver (p = 654 lb/ft^3), sand (p = 94.6 lb/ft^3), freshly fallen snow (p = 31 lb/ft^3), tar (p = 75 lb/ft^3), and hard rubber (p = 74.4 lb/ft^3).

What will be an ideal response?

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