Why are polar bear populations declining so rapidly?
What will be an ideal response?
Loss of habitat from melting polar ice and hunting
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Technician A says that oil pumps are all negative displacement types. Technician B says that many oil pumps are driven by the front of the crankshaft. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Technician A says that charging system testing requires that the battery be at least 75% charged. Technician B says that a digital multimeter can not be used to test charging system voltage. Who is right?
A) A only B) B only C) Both A and B D) Neither A nor B
A series RL circuit contains two resistors and two inductors. The resistors are 33 ? and 47 ?. The inductors have inductive reactances of 60 ? and 30 ?. Angle theta is _____.
A. 48.37° B. 52.27° C. 63.97° D. 72.55°
A major advantage of pipe flanges is ____.
A. quick disassembly B. resistance to high pressure C. resistance to vibration D. reduced space requirements