The "memory" of magnetism is the principle behind the __________
A. transistor
B. vacuum tube
C. hard disk
D. vinyl album
C
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When lifting loose materials such as pipe or bar stock, use a _____.
a. chain and hook b. double-wrap choker hitch c. beam clamp d. hook in the banding
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Which switching device uses a shutter blade and sensor to detect a magnetic field?
A) Pickup coil
B) Hall-effect switch
C) Optical sensor
D) Ignition coil
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A(n) ________ switch is a telephone switch capable of switching international calls and converting the SS-7 signaling protocol into protocols used elsewhere in the world
Fill in the blank(s) with correct word
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________: a product that is made different from others through advertising or quality variation.
Fill in the blank(s) with the appropriate word(s).
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