Which is the analog signal?
未知类型：{'options': ['', ''], 'type': 102}
未知类型：{'options': ['', ''], 'type': 102}
举一反三
- Which of the followings is a suspension bridge? 未知类型：{'options': ['', ''], 'type': 102}
- Which one is sky-wave propagation? ( ) 未知类型：{'options': ['', '', ''], 'type': 102}
- Which of the followings is a viaduct bridge? 未知类型：{'options': ['', ''], 'type': 102}
- In the following figure,which one is the threaded connection? 未知类型：{'options': ['', '', '', ''], 'type': 102}
- Which one of the followings is NOT the criteria of strong inversion? 未知类型：{'options': ['', '', '', ''], 'type': 102}