How often should the vacuum pump oil be changed?
A. every 3 months of operation
B. every other time it is used
C. before each use
D. every 8 hours of operation
Answer: C
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Barbara had a pond dug with the outside of the dam making an angle of 30° with the horizontal. The dam is 16 feet high (Figure 3-3).
a. What is the slope of the outside of the dam?
b. How long is the dam in feet?
The top of a tire is tilted out when viewed from the front. This is considered to be ________
A) Positive camber B) Positive caster C) Negative camber D) Negative toe
Measurements are being discussed. Technician A says a magnifying glass is sometimes helpful when reading a vernier scale. Technician B says 24.5 mm equals one inch. Which technician is correct?
A. Technician A B. Technician B C. Both technicians D. Neither technician
Describe two disadvantages of SAR respirators.
What will be an ideal response?