The _______(operate) of the machine is easy.
举一反三
- The of this machine is simple. (operate)
- When multiple people operate a machine tool, ( ) A: two people can operate the machine at the same time B: only one person can operate at the same time C: only one person can operate at the same time, and other students can leave the machine to rest D: All of the above are correct
- The machine is ___________ . A: in operate B: in operation C: in common
- The related information can help you to operate the machine ________.
- The machine is difficult to ____, but easy to operate.