What is the purpose of signal words that are found on pesticide labels? What are
three signal words and what category of pesticide does each word signal?
What will be an ideal response?
Signal words are intended to alert the user to the toxicity of a pesticide. Three signal
words are DANGER, meaning highly toxic; WARNING, meaning moderately toxic; and
CAUTION, meaning slightly toxic or relatively nontoxic.
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What should you do if a dimension seems to be missing on the print you are reading?
a. Use a scale to measure the desired feature. b. Use math to calculate the missing dimension from given values. c. Use a caliper or micrometer to measure the feature. d. Consult with the engineer or drafter to determine the missing dimension.
In the accompanying figure, find side x to the nearest hundredth millimeter. All dimensions are in millimeters.
A. 97.70 mm B. 99.08 mm C. 100.76 mm D. 102.34 mm
The major concern with ammonia refrigerant is:
A) It is much more expensive than halogenated refrigerants. B) It is poisonous and flammable. C) It can only be used with copper, brass, and aluminum. D) Its normal operating pressures are extremely high.
One potential safety hazard that all technicians should be aware of when working on an electric furnace is that there are many exposed electrical connections.
Answer the following statement true (T) or false (F)