On a WPS, when a DC welding process is specified, _____
a. tack welding is not allowed
b. the precise model of the welding machine is also provided
c. only E6010 electrodes can be used
d. the polarity required must also be given
d
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A ____ action is used to control a unit, such as a light, from two locations.
A. double-pole, single-throw B. single-pole, double-throw C. double-pole, double-throw D. single-pole, single-throw
Flat organizations have fewer levels of management than tall ones
Indicate whether the statement is true or false.
In one field trial comparing no-till and conventional tillage, soil samples taken after 15 years without liming revealed that the pH of the upper 15 cm was lower on the no-till plot than on the conventional plot. Which of the following most likely accounts for this difference?
A) earthworms were more active in the no-till plot B) acidifying effects of nitrogen-containing fertilizers C) organic decomposition produced more organic acids in the no-till plot D) plowing mixes the surface soil more thoroughly E) Al3+ ions are tied up by the organic matter thereby releasing H+ ions
At about 2 inches long, young fish, called ____________________, are placed in ponds or put in cages.
Fill in the blank(s) with the appropriate word(s).