When placing a ladder against a platform or roof, the top of the ladder should extend above the point where
the ladder touches the platform or roof by at least _____.
a. 2 feet (61 cm)
b. 3 feet (91 cm)
c. 4 feet (1.2 m)
d. 5 feet (1.5 m)
b
You might also like to view...
What is annealed glass?
What will be an ideal response?
The livestock that primarily depend on 20 percent protein hay are:
a. dairy cattle c. sheep b. horses d. beef cattle
What is a field weld?
What will be an ideal response?
The operations of addition and subtraction of signed binary numbers may be accomplished with parallel full-adders, provided that:
A) positive numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the minuend in subtraction problems. B) negative numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the minuend in subtraction problems. C) negative numbers are represented in 2's-complement form and a means is provided to take the 2's-complement of the subtrahend in subtraction operations. D) negative numbers are represented in 2's-complement form and a means is provided for taking the 2's-complement of the minuend and the subtrahend in subtraction problems.