The correct answer is D) Both the first and third answers are correct.
A regulator equipped with a conventional alternate-air-source second stage is among the most widely used and readily understood type of alternate air source, and allows the donor to give either second stage to an out-of-air diver. d) Both the first and third answers are correct.
Here we are talking about scuba diving equipment. It is the regulator that allows the diver to breathe from the oxygen tank. It is of the utmost importance because the function of this piece of equipment is precisely to regulate the pressure of the air so the diver has no problems breathing while it is diving. Let's have in mind that the air contained in the oxygen tank is at high pressure. Without the regulator, it could be difficult for the diver to breathe and could put it at risk.
The answer would be : how to produce. When the markets or government make a decision about how to most efficiently convert their resources into goods and services, they answer the question of how to produce, such as how many labors that they're using, or what kind of technology that would increase their production process.
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The War of 1812 was unfortunate and it was pretty much a draw. However, there were some tangible benefits coming from it. For the Americans, the original goals were accomplished. The States wanted the British to quit stopping U.S. ships and kidnapping American sailors to serve in the British Navy against the French
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