How many oxygen cylinders can an O2 cylinder case hold?

The correct answer indicates that an O2 cylinder case can hold two oxygen cylinders. This configuration is common in various setups where oxygen supply is needed, such as in medical environments or industrial applications. Having two cylinders allows for redundancy and readiness; if one cylinder depletes, the second can continue to supply oxygen without interruption.

This design is pivotal for ensuring safety and efficiency, as it enables the ability to quickly swap out an empty cylinder for a full one without the need to disrupt ongoing operations. In contrast, configurations allowing for a different number of cylinders may not provide the same level of operational continuity or safety. Therefore, the standard use of two cylinders in a case plays a crucial role in effectively managing oxygen supply.