90 Which of the following is equivalent to a lump sum contract:
A. fixed price contract
B. price fixing contract
C. purchase order
D. All of the above.
E. B and C only
第1题:
In approximating costs, the estimator considers the possible causes of variation of the cost estimates, including.(71)。
A.budget
B.plan
C.risk
D.contract
第2题:
第3题:
第4题:
After discharging,the above valves were inspected again and found them in ______ condition.
A.detact
B.contact
C.intact
D.contract
第5题:
第6题: