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15
×
The correct coolant/antifreeze mixture for use in most vehicles is ____.
50% antifreeze/50% water
pure ethylene glycol
pure water
25% antifreeze/75% water
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lifesaver
Give 5 points!
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×
gift
Win 15 points!
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×
rocket
Go to first place!
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×
baam
Lose 20 points!
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15
×
One of the functions of antifreeze is to lubricate the water pump.
True
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15
×
High thermostat heat ranges are used in modern vehicles to reduce exhaust emissions.
True
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lifesaver
Give 25 points!
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seesaw
Swap points!
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rocket
Go to first place!
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banana
Go to last place!
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15
×
A fluid coupling fan clutch is designed to ______________________________ at higher speeds.
slip
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heart
Other team wins 20 points!
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star
Double points!
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shark
Other team loses 20 points!
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lifesaver
Give 10 points!
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15
×
When a thermostat is closed, which of these permits coolant circulation through the engine?
Bypass valve.
None of the above.
Both of the above.
Bypass thermostat.
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15
×
Liquid cooling systems are the most common for passenger cars.
True
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15
×
____________________cooling systems are no longer used in vehicles.
Open
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15
×
The worm drive hose clamp is seldom used in cooling systems.
False
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15
×
Typical radiator cap pressure in an automotive cooling system is ____ psi.
20â26
7â10
12â16
18â20
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15
×
A flex fan alters airflow in response to engine speed.
True
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15
×
A block heater is often used on diesel engines to aid winter starting.
True
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15
×
A(n) ______________________________ is a small tank placed inside the vehicle's radiator to dissipate heat from transmission fluid.
oil cooler/ transmission cooler
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15
×
For every pound of pressure increase, water's boiling point goes up about __________________ degrees F.
1
5
10
3
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