The ____ is a mechanical seal in which the rotating mating surface is mounted externally from the stuffing box.
A. radial lip seal
B. outside seal
C. double seal
D. inside seal
Answer: B
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Pipe joint misalignment is checked with a _____.
a. pipe extractor b. hi-lo gauge c. string line level d. drift pin
The approximate amount of joint tape required to finish 1,000 square feet of drywall is _____.
a. 210' b. 260' c. 300' d. 370'
La organización que actualmente auspicia al NEC® es:
a. la NFPA (National Fire Protection Association: Asociación Nacional de Protección contra Incendios). b. la ASTM (American Society for Testing and Materials: Sociedad Estadounidense para Pruebas y Materiales). c. la NEMA (National Electrical Manufacturers Association: Asociación Nacional de Fabricantes Eléctricos). d. la Electrical Safety Commission (Comisión de Seguridad Eléctrica).
A front wheel drive vehicle makes a clicking sound when driving around a corner. Which of these is the most likely cause of this noise?
A) Worn CV joint B) Loose tie rod ends C) Worn rear wheel bearing D) Worn front wheel bearing bearing