Asphalt, fiberglass, and wood are the most typical types of shingles used as roofing materials.
Answer the following statement true (T) or false (F)
True
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Problem 1.55 In the structure shown, an 8-mm-diameter pin is used at A, and 12-mm-diameter pins are used at B and D. Knowing that the ultimate shearing stress is 100 MPa at all connections and that the ultimate normal stress is 250 MPa in each of the two links joining B and D, determine the allowable load P if an overall factor of safety of 3.0 is desired.
Which of the following is not an optional number of inputs for a digital input module?
A. 4 B. 8 C. 16 D. 32
The best type of face protection for all forms of welding is a _____
a. welding hood with a properly shaded lens b. pair of safety glasses with side shields c. pair of snug-fitting cutting goggles d. hard hat with a face shield
Where would you expect to find the condenser mounted on the truck?
A. On the fire wall B. Inside the truck cab C. Inside the bunk D. In front of the engine radiator