Which of the following large-cylinder safety recommendations…

Which of the following large-cylinder safety recommendations is appropriate?      1. Protective caps are not necessary during storage.      2. Cylinders should be transported with protective caps.      3. Cylinder carts used in the operating room must be grounded.      4. Transportation must occur on an appropriate cart, onto which the cylinder is secured by a chain.  

An “E” size cylinder is turned on, and the flowmeter is off….

An “E” size cylinder is turned on, and the flowmeter is off. Which of the following are the most likely causes of a hissing sound?     1. A cracked flowmeter     2. Inadequate pressure in the cylinder     3. An obstruction at the regulator outlet     4. A leak in the connection between the yoke and the cylinder opening