The ballast needs to be replaced.
举一反三
- My computer screen needs to be replaced. It keeps _____, turning on<br/>and off all the time. A: going dead B: flickering C: crashing
- The correct sound of bow in “The violist needs to have her bow replaced” is ____. A: /baʊ/ B: /bəʊ/
- 中国大学MOOC: My car does not start on cold mornings. I think the battery needs to be replaced. I already had it recharged once. I don’t think charging it again would help.
- However the sleepers need to be replaced.题干
- 30. If the cause of severe list or trim is off-center ballast，counterflooding into empty tanks will ___.