What is the difference between schedule 40 and schedule 80 iron pipe?
What will be an ideal response?
Schedule 80 has a heavier wall than schedule 40. Schedule 40 is "standard" strength; schedule 80 is "extra-strong.".
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In metric drawings for weldments, a millimeter dimension with a whole number and a decimal fraction is shown with a zero following the decimal fraction.
Answer the following statement true (T) or false (F)
What was the interest of the U.S government in supporting expansion of railroads in the mid-19th century, and how did the government provide support?
What will be an ideal response?
Research shows that the more chemicals there are in the air, the harder ____ work to remove them,
with rates of removal dropping when levels of toxins subside.
a. VOCs c. air purifiers b. plants d. humidity levels
Which of the following statements regarding preparing for an inspection visit is incorrect?
A. Plan the area to be inspected. B. Review occupancy files prior to leaving the station. C. Inspections are performed around firefighting schedules and not the schedule of the business owner. D. Give consideration to the type of activities conducted at the business relative to the time of day chosen for the inspection.