em rule การใช้

The report did not make explicit recommendations, in part, Wilson said, because EMS rules are generally adequate.
During her second term, she defended O'Hara Flying Service, the city's air ambulance, after it was found to have state EMS rule violations.
Under EMS rules, Ms . Ortega's bleeding required a response by a highly trained paramedic, but instead, an ambulance staffed by two less-skilled emergency medical technicians was sent.
A section on the 2-em rule ( : . ) also explains that the 2-em can be used to mark an abrupt break in direct or reported speech, but a space is used before the 2-em if a complete word is missing, while no space is used if part of a word exists before the sudden break.