Positive displacement meters are powered by __________.
A. an external energy source
B. the fluid which flows through them
Answer: B
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A 12-volt battery has had a capacity of 30 ampere-hour aging and has dropped to a capacity of 24 ampere-hours. Find the percent decrease in capacity.
Fill in the blank(s) with the appropriate word(s).
Examples of tasks completed by a(n) ____ include preparing elementary engineering and shop drawings, drawing details, performing revisions and corrections.
A. drafting clerk B. junior CAD technician C. introductory CAD assistant D. drafting technician
? Identify and state the historical significance of the Woman's Loyal League.
What will be an ideal response?
Let X and Y be random variables with 
. Find the means and variances of the following quantities.
a. X+Y b. X–Y c. 3X+2Y d. 5Y – 2X