Most porosity is caused by improper welding techniques and _____
a. shielding gas
b. cold
c. metal fatigue
d. contamination
d
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What are the four common real-world applications of a perpendicularity tolerance on a drawing?
What will be an ideal response?
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Fires that involve ordinary materials such as paper, cardboard, and wood are classified as Type __________ fires.
A. A B. B C. C D. D
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A safe hoisting and rigging operation requires the rigger to understand:
A. The weight of the load and rigging hardware. B. The lift capacity of the hoisting device. C. The working load limit (WLL) of the hoisting rope, slings, and hardware. D. All of the above
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Calculate the voltage ratio v?/vs for the op amp circuit of Fig. 5.51. Assume that the op amp is ideal.
 FIGURE 1.png)
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