Before cutting or welding a container that might have contained a hazardous substance, check the label, and

then _____.

a. call the project safety officer
b. refer to the safety data sheet
c. consult your supervisor
d. go to the OSHA website


b

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The most commonly used leveling instrument for building layout, construction, and surveying due to ease of use and rapid set-up time is the _____.

a. framing square b. water level c. builder's level d. auto level

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When using a sprayer to apply a pesticide, be sure to _____

A) spray near a school B) calibrate the sprayer C) pour pesticides in the drain D) store remaining pesticides

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The term ____________________ immunity refers to antibodies being transferred from one animal to another

Fill in the blank(s) with correct word

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

1. If properly designed, a closed-loop hydronic system should rid itself of most air within a few days of initial start-up. 2. The oxygen that causes corrosion is the same oxygen that forms water molecules. 3. Circulators transfer maximum head energy to incompressible fluids (e.g., liquids). A mixture of water and air is an example of an incompressible fluid. 4. Air has much lower specific heat and density than water. 5. Circulators with internal spring-load check valves installed in vertical piping with upward flow are especially susceptible to air pockets.

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