Discuss five advantages of monoculture systems
What will be an ideal response?
1 . Machinery specialized for the crop can be used to maximize efficiency of crop planting and harvest.
2 . Chemicals such as herbicides, insecticides, and fungicides can be used to target specific weed, insect, and microbial pests of the monocrop.
3 . Fertilizer systems can be developed to meet the nutrient needs of the crop by applying the nutrients at specific developmental stages.
4 . Specialized varieties are developed to efficiently use light, moisture, and other environmental resources.
5 . With monocultures, maturity and dry down of all plants within a variety is synchronized. This allows for a single harvest with reduced loss of grain due to spoilage.
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Diesel fuels contain some paraffin (wax). In very cold weather, the paraffin can separate from the fuel. This is called the ____________________.
Fill in the blank(s) with the appropriate word(s).
You should expect that the interviewer will ask how old you are and whether you are married
Indicate whether the statement is true or false
A chemical engineer is considering two sizes of pipes for moving distillate from a refinery to the tank farm. A small pipeline will cost less to purchase (including valves and other appurtenances), but will have a high head loss and, therefore, a higher pumping cost. The small pipeline will cost $1.7 million installed and have an operating cost of $12,000 per month. A larger-diameter pipeline will cost $2.1 million installed, but its operating cost will be only $8000 per month. Which pipe size is more economical at an interest rate of 1% per month on the basis of an annual worth analysis? Assume the salvage value is 10% of the first cost for each pipeline at the end of the 10-year project.
What will be an ideal response?
Technician A says that most crankshafts can be reground to be 0.010, 0.020, or 0.030 inch undersize. Technician B says that most engine bearings are constructed with an aluminum shell for strength and are covered with a tin-lead alloy. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B