_____________ work has to be done before the plant goes into operation.
举一反三
- He has never done this type of work before; I am not sure how he will fit _____ with it. A: in B: on C: for D: up
- There are _____ work to be done before the building can be used for living.
- ________work has been done to solve the problem.
- Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.
- DU = 100 J is for a system that gives off 100 J of heat and ( ) A: does no work B: does 200 J of work C: has 100 J of work done on it D: has 200 J of work done on it.