The machine is difficult to ____, but easy to operate.
举一反三
- -- This machine is too difficult to operate. A: Try them again! B: You certainly know how to do your job! C: Keep your chin up! D: Stick it out!
- The of this machine is simple. (operate)
- The _______(operate) of the machine is easy.
- 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