When the American flag is being displayed with flags of states, cities, schools or pennants of societies on the same halyard, the American flag should always be at the peak with the non-national flags below it. When flying flags on adjacent staffs, the American flag should always be hoisted first and lowered last.
Definition of gas. a material that is shipped in compressed gas cylinders or acts as a gas upon release at normal temperatures and pressure, or is used or handled as a gas, whether or not in strict accordance with the definition of a compressed gas as set forth in Article 9 of the Uniform Fire Code. [SEMI S4-92].
A gas is a form of matter that does not have a defined shape or volume. Gases can consists of a single element, such as hydrogen gas (H 2), or may be a compound, such as carbon dioxide (CO 2), or a mixture of several gases, such as air.Here is a list of examples of 10 gases and their uses. 1  oxygen (O 2) : medical use, welding. 2  nitrogen (N 2): fire suppression, provide inert atmosphere.ases can consists of a single element, such as hydrogen gas (H 2), or may be a compound, such as carbon dioxide (CO 2), or a mixture of several gases, such as air. Here is a list of examples of 10 gases and their uses. 1  oxygen (O 2) : medical use, welding.