Answer the following statements true (T) or false (F)

1. OSHA began as an enforcement agency.
2. The Lockin/Tagin provision of the safety laws is a requirement to take preventive measures to
assure that equipment or machinery will not unexpectedly start up or operate while it is under repair or otherwise unsafe to operate.
3. OSHA has found that they can have a greater impact on overall workplace safety if they work with employers rather than against them.
4. If a major incident occurs, federal law requires that it must be reported to OSHA within 1 day.


1. TRUE
2. FALSE
3. TRUE
4. FALSE

Trades & Technology

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The kind of chemical reaction in which heat is absorbed from the environment is known as endothermic

Indicate whether the statement is true or false.

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Gillian has developed estimates for strengthen­ing the undercarriage on a medium-use, 70-year-old bridge for which there is no budget to replace the bridge for the next 5 years. Esti­mates are P = $800,000, S = 0, maintenance cost, M&O = $10,000 per year, n = 5 years. Use a spreadsheet and MARR of 2% per year to do the following:

(a) Determine what the project will cost in PW terms.
(b) During the analysis, Gillian learned that some 25 similar projects had been completed over the last 10 years. With the help of her supervisor, Gillian obtained the information below on the first cost, P, and maintenance cost, M&O, for these projects. Repeat the PW evaluation using expected values for these two estimates. Is PW higher or lower than the value in part (a)?

(c) Assume the bridge is strengthened and ad­ministratively moved to the toll division, which promises a net revenue of $180,000 per year above the M&O cost. Is the project economically justified at the first cost of $800,000? What is the projected response from the driving public to the toll on this 70-year-old bridge?

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Brake fittings are made with both SAE and ISO metric threads.

Answer the following statement true (T) or false (F)

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A neutral flame is used for flame cutting

Indicate whether the statement is true or false

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