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
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
举一反三
- The related information can help you to operate the machine ________.
- What is a video conference call A: a DVD machine B: a telephone that lets you see the other person C: a telephone call where a number of people can take part at the same time and be seen
- The related information can help you to operate the machine (efficient)
- How......................(he, operate, can) the machine if he....................(go, not) through proper training
- The washing- machine can operate by itself. A: personally B: automatically C: manually D: quickly