Grasslands usually are populated:
A) only by dicotyledonous plants with blade-like leaves.
B) predominately by blade-like dicotyledonous plants and a few Poaceae.
C) only by members of the Poaceae family.
D) predominately by Poaceae with other families mixed in.
D
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The first cost of grading and spreading gravel on a short rural road is expected to be $700,000. The road will have to be maintained at a cost of $25,000 per year. Even though the new road is not very smooth, it allows access to an area that previously could only be reached with off-road vehicles. This improved accessibility has increased the property values along the road from $400,000 to $600,000. The conventional B/C ratio at an interest rate of 6% per year for a 10-year study period is closest to: (choose one)
(a) 1.3 (b) 1.7 (c) 2.1 (d) 2.8
What happens in a reciprocating compressor when the piston reaches its lowest point?
a. Discharge valve opens b. Suction valve closes c. Refrigerant leaves the cylinder d. Refrigerant begins to enter the cylinder
If a low temperature evaporator is forming excess ice, which of the following could be a possible problem?
A. The evaporator fan motor is defective. B. The unit is not staying in defrost long enough. C. The defrost heater is defective. D. All of the above are correct.
What is the primary opening force on a standard thermal expansion valve (TEV)?
a. Pressure from the sensing bulb. b. Superheat adjustment spring pressure. c. Pressure at the TEV outlet to the evaporator. d. Suction pressure at the evaporator outlet.