發送短信 : Tests on RC continuous beams with openings

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