中国大学MOOC: Preventive maintenance_____. A. should not be carried out during the watches B. can only be carried out in port C. is a kind of maintenances carried out prior to the occurrence D. is a kind of maintenances carried out after the occurrence 预防性维修时在事故发生前进行的维修。
举一反三
- Not all of those _____ takeovers continue to run the business they have bought. A: to be carried out B: carrying out C: being carried out D: carried out
- This project is said ______ right now. So far everything is going on quite smoothly. A: to have carried out B: having been carried out C: to have been carried out D: to be being carried out
- After making a great effort, we finally ______ the plan. A: carried on B: carried off C: carried over D: carried out
- It is decided that they _______ his plan. A: carried out B: have carried out C: carry out D: would carry out
- 16.The experiment shows that proper amounts of exercise, ifregularly, can improve our health. A: being carried out B: carrying out C: carried out D: to carry out