According to the 29 CFR 1926, toeboards shall be _____ .
A. a minimum of 4" in height
B. no more than 3" in height
C. exactly 5" in height
D. a maximum of 4" in height
Answer: A
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Retempering of mortar, if needed, should be generally done within ______.
A) 1 h of the initial preparation of mortar. B) 4 h of the initial preparation of mortar. C) 5-1/2 h of the initial preparation of mortar. D) 2-1/2 h of the initial preparation of mortar. E) none of the above.
The two basic systems of breeding in livestock production are _____ and _____
a. rotational breeding, inbreeding c. purebred breeding, inbreeding b. linebreeding, outcrossing d. straightbreeding, crossbreeding
_____ occurs when the weld pool shrinks as it cools and the bead becomes concave.? ?
Fill in the blank(s) with the appropriate word(s).
What advantage does a voltmeter have over a noncontact voltage indicator when testing for voltage?
A) They can work without touching the energized component. B) They are less expensive. C) They connect wirelessly to smartphones. D) Voltmeters read the specific voltage level present.