Pump jack scaffolds are used widely for ____, where staging must be kept away from the walls, and when a steady working height is desired.

a.roofing
b.siding
c.framing
d.partitioning


ANS: B

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A concrete block wall built in the stack bond must be full stretchers.

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

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

1. Any industrial application that has a pressure-sensing requirement can use a pressure switch. 2. A limited variety of pressure switches are available for control requirements of pneumatic or hydraulic machines. 3. A diaphragm-actuated switch can be used when a sensitive response is required to small pressure changes at highpressure ranges. 4. The most commonly used pressure switches are single-pole switches. 5. Pressure regulators provide accurate control of pressure or vacuum conditions for systems.

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Which type of facility usually generates unusual waste products requiring special handling?

a. industrial b. commercial c. residential d. institutional

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The globulin fraction of serum containing the antibodies is called ____________________

Fill in the blank(s) with correct word

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