Under the premise of technological production, preventive maintenance should be carried out at least twice a year to master the operating status of the system and eliminate the hidden trouble.
举一反三
- 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。
- The four types of costs that are found in the Life Cycle Costing concept are ______. A: operating/maintenance, discard, direct, and variable B: indirect, auxiliary, development, and production C: operating/maintenance, development, discard, and production D: indirect, auxiliary, indirect, and direct
- Forced molting should be carried out at ( ) A: Late stage of egg production B: Before Birth C: The period of increasing laying rate D: Peak egg production
- The factory has turned out ______. A: twice TV sets this year more than last year B: TV sets this year twice as many as last year C: twice as many TV sets this year as last year D: TV sets twice more this year that last year
- Multimodal transport means the goods are carried by at least two modes of transport under at least two multimodal transport operators.