Which of the following is not a contour symbol used on the welding symbol?
a. Concave
b. Flush
c. Depressed
d. Convex
Answer: C
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Three different plans were presented to the GAO (General Accounting Office) by a high-tech facilities manager for operating a portable cyber-security facility.
Plan A: Renewable 1-year contracts with payments of $1 million at the beginning of each year. Plan B: A 2-year contract that requires three payments of $600,000 each, with the first one to be made immediately and the second and third payment made at the beginning of the following two 6?month intervals; no payments required during the second year of the contract. Plan C: A 3-year contract that entails a payment of $1.5 million now and another payment of $0.5 million 2 years from now. Assuming the GAO can renew any of the plans under the same conditions, if it decides to do so, which plan is best on the basis of a present worth analysis at an interest rate of 6% per year, compounded semiannually? Solve using (a) factors and (b) a spreadsheet. (Hint: Construct a cash flow diagram before working this problem.)
Truck-mounted units that carry all the necessary components for on-site concrete mixing are described as
_____. a. volumetric mixers b. remote plants c. mobile batching plants d. site-based plants
Which of the following refrigerant piping techniques help to get oil to flow up a riser in a suction line?
a. Selecting a line size that results in a very low velocity. b. Selecting a line size that is one or two sizes larger than the rest of the line. c. Installing a trap at the bottom of the riser. d. Installing a liquid-to-suction heat exchange
A tractor-trailer is more likely than a straight truck to jackknife on ice because _____.
Fill in the blank(s) with the appropriate word(s).