Engineering Economics
Which one of the following questions is relevant to the construction estimates?

Did the estimators precisely evaluate site conditions
All of these
Did the estimators use short cut methods which may be unrealistic in their situation
How much money will the contractor's risk, loosing if he were to submit bid on the raw estimate of cost

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Engineering Economics
In a cash flow series:

Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period
Either an increase or decrease in the amount of a cash flow is called the gradient
All of these
The gradient in the cash flow may be positive or negative

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