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| |  | ||  /_   _// |  __ \\   /_   _//  /_   _// 
| |/\| ||   -| ||-  | |  \ ||   -| ||-     | ||   
|  /\  ||   _| ||_  | |__/ ||   _| ||_    _| ||   
|_// \_||  /_____// |_____//   /_____//  /__//    
`-`   `-`  `-----`   -----`    `-----`   `--`

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發送短信 : Service quality : a case study on Jack's Place