Which of the following is true concerning safe scaffold use?
A. Load a scaffold in excess of the maximum intended load.
B. Never use shore or lean-to scaffolds.
C. Workers are allowed to perform tasks on scaffold during periods of high wind or in storm conditions.
D. Scaffolds can be moved in a horizontal direction while occupied by workers.
B
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Write the balanced equation for the combustion of methane (CH4), in the presence of oxygen.
What will be an ideal response?
When framing a floor opening, the short pieces installed parallel to the common joists are called _____.
a. trimmers b. tail joists c. purlins d. header joists
When E6010 electrodes are used to make the root pass on open-root V-groove pipe welds, it is important to
_____. a. use the keyhole technique to achieve proper root penetration b. set the amperage to the upper part of the suggested range c. avoid using a whipping motion that might disrupt the puddle size d. maintain a long arc or substitute E7018 electrodes
Determine the probability (assuming normal distribution) that a car would need engine maintenance after 100,000 miles.
What will be an ideal response?