A lubricant often has to perform many duties in any situation， in addition to its fundamental job of （）.
举一反三
- In addition to the computer, Jason has many good friends.
- ________ is about work and means to have a lot or too many duties to perform, or too much work to do at one time.
- Motivation is an employee’s desire to perform their role. It often linked to the outcome and any reward.
- What duties does a receptionist perform?
- The Seller will indemnify the Buyer for any _____ arising as a result of the Seller's failure to perform any of its obligation arising out of the sale of the goods to the Buyer.