A stair constructed without risers is generally called a(n)

A) closed-riser stair.
B) hollow stair.
C) open-riser stair.
D) no-riser stair.


C) open-riser stair.

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Technician A says the gears in a planetary gearset are in constant mesh. Technician B says a planetary gearset has a ring gear and pinion gears. Which technician is? correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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What are acceptable pH ranges for soil-base substrate and soilless substrates?

What will be an ideal response?

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Which of the following is produced during the fuel cell energy production process?

A) Water B) CO2 C) CO D) None of these

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In a capacitive AC circuit, when the voltage starts to increase, current is at ____ because the capacitor is discharged.

A. minimum B. maximum C. zero D. one

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