What are the common types of preheaters that are used?
What will be an ideal response?
These may be electric, steam, or hot water.
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What is the name of the part of the weld that letter C is pointing to in Figure 1?
a. Leg
b. Root
c. Face
d. Toe
e. Land
Lines on drawings used to indicate an area that has been cut away and shown in a section view are called _____.
a. extension lines b. break lines c. phantom lines d. cutting plane lines
Steel cable barriers in highway medians are a low-cost way to improve traffic safety without overstressing department of transportation budgets. Cable barriers cost $44,000 per mile, compared with $72,000 per mile for guardrail and $419,000 per mile for concrete barriers. Furthermore, cable barriers tend to snag tractor-trailer rigs, keeping them from ricocheting back into same-direction traffic. The state of Ohio spent $4.97 million installing 113 miles of cable barriers. Answer the following using both tabulated factors and a spreadsheet function.
(a) If the cable barriers prevent accidents totaling $1.3 million per year, what rate of return does this represent over a 10-year study period? (b) What is the rate of return for 113 miles of guardrail if accident prevention is $1.1 million per year over a 10-year study period?
The complement of a product of variables is equal to the ________ of the complements of the variables
Fill in the blank(s) with correct word