_____ uses the very short wavelength rays developed by x-ray machines or radioactive isotopes.?
Fill in the blank(s) with the appropriate word(s).
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Technician A says that major sources of chemical dangers are from solvents containing chlorinated hydrocarbons. Technician B says that solvents can be reclaimed so that they can be reused. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
People responsible for enforcing wildlife and conservation laws are usually called _____
a. biologists b. engineers c. game wardens d. research scientists
Elevations are sometimes named according to ____.
A. structural material B. private nomenclature C. height D. compass directions
When an oil or gas boiler is used, the water chamber is divided into smaller compartments to increase the surface area on which the heat can act.
Answer the following statement true (T) or false (F)