An ____ diaphragm valve allows flow to pass when the activating signal is not applied.
A. air-to-open
B. air-to-close
Answer: B
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Which of the following are not used to keep water away from a structure?
a. positive grade b. detention pond c. drainage swale d. diversion berm
Which type of wheat makes the highest quality bread?
A) hard red spring B) soft red spring C) hard red winter D) soft red winter
Mineralization of soil organic matter results in the addition of inorganic nutrient ions to the soil solution
Indicate whether the statement is true or false
When an air cooled split system operates at low ambient temperatures
A) The decreased air density reduces the airflow over the condenser B) System efficiency is increased because of the extra cooling effect of the colder air C) Head pressure increases because of the inverse relationship between ambient temperature and condenser temperature D) Low ambient controls are necessary for safe operation