Which of the following are unsafe practices that should be avoided when using a ladder?
A. Don't lean a ladder against a unstable surface.
B. Don't rig a makeshift ladder.
C. Don't carry tool in your hands while climbing a ladder.
D. All of the above.
D
You might also like to view...
A section of the boiler utilized to preheat feed water before it enters the main boiler system.
a. convection section b. economizer section c. radiant tube section d. shockbank
The greatest increase in prenatal weight occurs during which trimester?
A. Middle B. Last C. First D. There is no difference during any trimester
The mode of heat transfer that occurs when a temperature difference exists in a medium is known as
a. conduction b. convection c. radiation d. none of the above
What defines the maximum rate of change in output voltage for a given change in input voltage?
A) differential change ratio B) slew rate C) slew ratio D) none of the above