Oxygen/acetylene systems are used for which of the following purposes?

Oxygen/acetylene systems are versatile tools commonly utilized in various metalworking processes, which include welding, cutting, and soldering. The correct answer reflects the broad range of applications these systems can handle.

In welding, oxygen and acetylene are used to reach high temperatures capable of melting metals, making it possible to fuse pieces together effectively. This gas mixture is particularly valuable in oxy-fuel welding, where the intense heat facilitates the creation of strong welds.

Similarly, silver soldering copper and brass joints involves using oxygen/acetylene due to the system's ability to produce sufficient heat to melt the filler metal without necessarily melting the base metals. This method is crucial for joining dissimilar metals or making precise connections in plumbing and electrical work.

Additionally, cutting metal is a critical function of the oxygen/acetylene system. The high flames produced by combining these gases can easily cut through various thicknesses of metal. This process is widely used in construction and manufacturing for both intricate and heavy-duty cutting tasks.

Taken together, the versatility of the oxygen/acetylene system in welding, cutting, and soldering underscores why all these applications are included, making the comprehensive option the most accurate choice.