plzzzz I need sol in 30 min (engineering management)

4- In the end months of construction projects, the contractor facing the following: a- The expenditures are larger than the income earned on the value of the work done. b- The income earned on the value of the work done are larger than the expenditures. C- The expenditures are equal to the income earned on the value of the work done. d- The income earned on the value of the work done are equal to the expenditures. 5- The project schedule is not used to determine: 2- The start and finish dates of the activities. b- Occasional changes to the activity listing. - The total float of the activities. d- The project's budget. 6- Any dummy activity in the network diagram will have: a- Zero duration and zero resources. b-Zero total float and zero duration c- Zero total float and zero resources. d- Zero total float and zero free float Q.3/ Choose the correct answer in ALL the following questions: (30 marks) 1- The method used in scheduling of uncertainty projects is: a- Critical path method b-Line of balance method c-Bar chart method d-PERT method 2- In the construction works , resource leveling is the way which means the initial distribution of resources over the life of the project, and try to............ a-Reach the best leveling to these resources within the time and cost constraints. b- Reach the best leveling to these resources within the time and cost constraints and availability of resources. c-Reach the best leveling to these resources within the availability of resources. d- Reach the best leveling to these resources within the time , cost, safety and weather constraints. 3- One of the following below causes avoiding loss of time , life ,machinery and of course work. a- Improving the productivity in the project. b- Incentives in the project, c-Safety and health in the project. d-Work break down structure in the project