Technician A says that adjustable end wrenches should be used to tighten fasteners. Technician B says that adjustable end wrenches can round the edges of fasteners. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
B
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The duration of a construction project is considered ____________ because it has a specific start date and a specific end date.
Fill in the blank(s) with the appropriate word(s).
For the model you chose in part A, calculate the values for the adjustable parameters in the model (e.g., the value of A in the one-parameter Margules equation) at T=300 K.
This problem concerns mixtures of two liquids, W and Z. Some data for pure W and pure Z is given in the table below. No data on mixtures of these compounds is available, but based on their molecular structures, use of the ideal solution model is considered unrealistic. You are going to use a thermodynamic model to predict whether this pair of compounds will form stable liquid mixtures, or whether there will be a miscibility gap, at atmospheric pressure and various temperatures.
Abel and Family Perfumes wants to add one or more of four new products to its current line of colognes. Historically, Abel has used a 5-year project recovery period and a MARR of 20% per year. (a) Determine which of the four options the company should undertake on the basis of a present worth analysis, provided the total amount of investment capital available is $800,000. Use a hand solution, unless assigned otherwise. (b) What products are selected if the investment limit is increased to $900,000? Use a spreadsheet, unless assigned otherwise. (All cash flows are in $1000 units.)
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A three ton air conditioning unit will require approximately ____ of air flow.
A. 400 CFM/ton B. 1,200 CFM C. 1,200 CFM/ton D. both a and b