A roller chain is considered worn out when it has elongated to _____ percent over its original length
a. 2
b. 3
c. 4
d. 5
a
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In a vacuum tube, ____ move through a low-pressure space, or vacuum.
a. radio waves b. electrons c. sonic impulses d. quarks
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After a disc brake pad replacement, the brake pedal went to the floor the first time the brake pedal was depressed. The most likely cause was ________
A) Lack of proper lubrication of the caliper slides B) Normal operation C) Air in the lines D) Improper disc brake pad installation
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Wetted asbestos is considered to be ________
A) Solid waste B) Toxic C) Hazardous waste D) Poisonous
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What liquids are most often used in a glass-stem thermometer?
A) Colored water or colored oil B) Special thermometer fluid that is a polymer derivative C) Liquid refrigerant or oil D) Mercury or alcohol
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