Cuando use una escalera de extensión, no debe pararse más arriba del _____ escalón comenzando desde arriba.

a. tercer
b. segundo
c. cuarto
d. quinto


Answer: C

Trades & Technology

You might also like to view...

Progress meetings are the most common during the design phase of the project.

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

Trades & Technology

What category of electric meter is intended only for measurement inside an appliance?

A) Category I B) Category II C) Category IV D) Category III

Trades & Technology

This type of fan is commonly used on condenser motors because it moves high volumes of air in low static conditions

A) Propeller B) Forward-curved centrifugal C) Backward-curved centrifugal D) Tube axial

Trades & Technology

Which statement best describes Mean Effective Pressure (MEP)

A. Average pressure during engine braking. B. Average of cylinder pressure and throw angle torque. C. Peak combustion pressure minus peak compression pressure. D. Turbochargers peak pressure minus the combustion peak pressure.

Trades & Technology