Why is virtually impermeable film" (VIF) being used more often in field fumigation rather than standard polyethylene film?
What will be an ideal response?
VIF film, by reducing escape of gas to the atmosphere through the film
during exposure time, allows for use of lower dose rates of the fumigant gas. The
recent surge in price of methyl bromide and very high price of methyl iodide
necessitates this economy.
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The torque specification for a valve cover gasket is 5 foot-pounds. Which of the following is the best procedure?
A. ?Use a 1?2" drive foot-pound torque wrench and torque to 5 foot-pounds. B. ?Use a 3?8" drive foot-pound torque wrench and torque to 5 foot-pounds. C. ?Use an inch-pound torque wrench and torque to 5 foot-pounds. D. Use an inch-pound torque wrench and torque to 60 inch-pounds.
The family Mustelidae includes ferrets as well as _____
a. rabbits b. rats c. skunks d. sugar gliders
Why is a heat pump called a heat pump?
A) All heat pumps use a pump that is constructed like a centrifugal water pump, but is used to pump heat molecules instead B) Because heat pumps must be pumped up with refrigerant pressure before they can operate C) The conversion of electricity into heat has the effect of pumping heat into the heated space D) It moves heat from a low temperature heat source to a higher temperature heat sink
Define the following terms:
a. Process drawings b. Process industries c. Process technician d. Troubleshooting e. Unit