a compulsory
举一反三
- The nine-year compulsory education consists of ____and ____.
- . Which of the following is true'? A: . a compulsory VHF-DSC radiotelephone installation must be daily tested without radiation. B: a compulsory VHF-DSC radiotelephone installation must be annually tested without radiation C: a compulsory VHF-DSC radiotelephone installation must be monthly tested without radiation. D: a compulsory VHF-DSC radiotelephone installation must be weeklv tested without radiation.
- Physics_____ a compulsory course for every student.
- Which subject is the compulsory subject to American students?
- In America children are offered ___ years of compulsory education.