CDL DOUBLES PRACTICE TEST NORTH DAKOTA
11.
Alcohol:
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improves reaction time.
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improves muscle coordination.
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does not affect judgement.
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impairs depth perception.
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12.
Engine oil pressure should come up to normal within _________ after the engine is started.
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ten minutes
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seconds
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five minutes
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two minutes
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13.
Having ABS on only the trailer:
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still gives you more control over your vehicle during braking.
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is very dangerous.
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makes the trailer more likely to roll over.
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makes the trailer more likely to swing out.
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14.
If a load is placed on one side of the trailer:
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a rollover is more likely.
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making turns may be easier.
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your brakes won't work.
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the steering axle weight will be too light to steer safely.
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15.
What is the most important reason to inspect your vehicle?
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Vehicle inspection is required by federal and state laws.
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Achieving the best gas mileage.
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Saving money by preventing costly repairs.
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Your safety and that of other road users.
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16.
Placards are:
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devices placed below a vehicle to improve traction.
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signs put inside a vehicle used to warn others of hazardous materials.
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a type of safety equipment.
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signs placed on a vehicle to identify the hazard class of the cargo.
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17.
Exhaust system parts should NOT:
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be loose.
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rub against fuel system parts.
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rub against tires.
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All of the above.
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18.
When the spring brakes are on, you should:
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pump the brakes.
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press the accelerator.
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not push the brake pedal down.
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exceed the posted speed limit.
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19.
Combination vehicles usually:
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require more driving skill than single CMVs.
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are shorter than single than single CMVs.
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are easier to drive than single than single CMVs.
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All of the above.
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20.
Which of the following road surfaces freezes first?
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Underpasses
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Parkings
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Bridges
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Open roads
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