The air quality of a confined space must be monitored _____________________.
A. before entering
B. while work is being done
C. for the first 30 minutes of the work
D. a and b
Answer: D
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La tolerancia de fabricación típica de una armadura en espiral es de _____.
a. ±1 ?4" b. ±1 ?2" c. ±3 ?4" d. ± 1"
If you see the sight glass bubbling should you add refrigerant? Why or why not?
a. No, the system may have just started or there may be a low load. b. No, wait until the bubbles stop before adding refrigerant. c. Yes, bubbles always mean the system is low on charge. d. Yes, when in doubt you should always add refrigerant.
In an HEV system, how much lighter are, and how much less space do lithium-ion batteries take up than nickel-metal-hydride batteries?
What will be an ideal response?
A shop uses 17 sheets a day of P1000 grit sandpaper. The shop works 5 days a week, 50 weeks a year. How much P1000 grit paper will they need for a year of business?
What will be an ideal response?