In order to purge air from a diesel engine cooling system after reconditioning, which of the following is recommended?

A. separate the upper radiator hose
B. remove the radiator drain plug
C. remove the thermostat housing
D. vent circuit by cracking a water manifold plug


Answer: D

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Calculate the BOD of the sewerage stream

The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River?

Suppose the following data was collected to estimated the five-day BOD in the river and sewerage water:


What will be an ideal response?

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____________________ is a possibility if the business can't afford to buy equipment outright

Fill in the blank(s) with correct word

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Which of the following is not listed as a product or process uncertainty?

A. Materials B. Cost C. Design D. Channels

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The first Protestant leader to work out ideas about the relationship of church and state in a systematic, lucid, and persuasive fashion was

a. Huldrych Zwingli. b. John Calvin. c. Thomas Cramner. d. Martin Luther.

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