What type of open-close valve is used to completely close a line so piping or equipment can be isolated for repair, inspection, or replacement?
A. gate
B. ball
C. butterfly
D. plug
Answer: A
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Which plastics product has poor thermal stability and has been the focus of most heat stabilizers??
A. ?ABS B. ?epoxy C. ?PVC D. ?polypropylene
Vegetable farms:
A) contribute little to the economy. B) require less management than other types of farms. C) are usually just a few acres near metropolitan areas. D) are operated as managed ecosystems.
Technician A says that all port fuel injected systems use the speed density method. Technician B says that throttle body injection systems use the speed density method. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Only the most expensive graphics subsystems are capable of displaying and manipulating shaded images in real time.
Answer the following statement true (T) or false (F)