THE BASIC PRINCIPLES OF ER

Desk clerk Frank (Troy Evans) normally talks about daily life to the "pressure" as a Chicago law enforcement officer. In the main episode, he experienced an overall look as a police officer, who was shot and addressed because of the ER personnel.与其他光纤元件相比，掺铒玻璃相对昂贵，这会影响光纤通信系统的总体成本�