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
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
The term ____________________ immunity refers to antibodies being transferred from one animal to another
Fill in the blank(s) with correct word
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.