Which of the following are rotary-type positive displacement pumps? (Select all that apply.)
a. Gear
b. Lobe
c. Vane
d. Axial
a. Correct. A gear, lobe, vane, and screw pump are rotary-type positive displacement pumps.
b. Correct. A gear, lobe, vane, and screw pump are rotary-type positive displacement pumps.
c. Correct. A gear, lobe, vane, and screw pump are rotary-type positive displacement pumps.
d. Incorrect. A gear, lobe, vane, and screw pump are rotary-type positive displacement pumps.
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Fill in the blank(s) with the appropriate word(s).
Which European power intervened in Bulgaria in 1877–78 to the benefit of Bulgarian nationalists seeking to gain their independence from the Ottoman Empire?
a. Russia b. Germany c. Austria d. Great Britain
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A) 7/16 inch B) 3/8 inch C) 1/2 inch D) 5/16 inch