A regulator equipped with a conventional alternate-air-source second stage: a) Is the among the most widely used and readily understood type of alternate air source. b) Limits the receiver to using only the alternate-air-source second stage. c) Allows the donor to give either second stage to an out-of-air diver. d) Both the first and third answers are correct.

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.

ne pare rău, dar când mi-am căutat întrebarea, doar avioanele au apărut .. deci, ar putea fi răspunsul, sau ar putea fi baloane cu aer cald, deoarece acestea pot conta și ca ambarcațiunile de aer, dar nu sunt complet sigur de asta. a fost doar o presupunere, sper că am ajutat, îmi pare rău dacă nu am făcut-o. de asemenea, folosesc traducerea google, pentru a traduce ceea ce spun în engleză, așa că îmi pare rău dacă gramatica sau chiar limba nu este corectă