____ elevators are used mainly for low-rise installations up to six stories.

A. Freight
B. Hydraulic
C. Electric
D. Residential


Answer: B

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Let A and B be events with P(A)=0.5 and =0.4. For what value of P(B) will A and B be independent?

What will be an ideal response?

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The ______________________ is the person whose job requires him or her to work on or around the piece of equipment being serviced.

A. affected B. authorized C. qualified D. supervisor

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Shift register counters often include reset logic circuits that clear them after a desired count is reached

Indicate whether the statement is true or false

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The transfer of heat energy from particle to particle in a substance is known as _____

a. convection b. conduction c. radiation d. conductance

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