Forklift Certification Practice Test (Jan.27)

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What is the name of the internal stress that has not disappeared after the stacker shelf is heated around the welding bead?

• thermal stress
• thermal resistance
• thermal tension
• residual stress

The higher the engine oil number, how is the viscosity of the engine oil represen ted?

• the stronger
• the weaker
• unchanged
• not necessarily

Which of the following is the driving device of the stacker?

• shuttle
• lifting mast
• manual transmission
• mast chain

What is the main use of the shuttle at the front end of the stacker so that it can freely lift and tilt forward or backward?

• hydraulic pressure
• oil pressure
• air pressure
• dynamic pressure

How does the compression ratio of a gasoline engine compare to that of a diesel engine?

• high
• low
• the same
• not necessarily

Which of the following items do not need to be checked for diesel engines?

• carburetor
• fuel tank
• jet pump
• fuel filter

How do you deal with the speaker of the stacker?

• can only be used outdoors
• only used for testing before lifting
• the function must be maintained frequently
• avoid using it as much as possible

After the diesel stacker engine starts, the exhaust pipe emits a lot of black smoke. What is the possible reason?

• the air filter is clogged
• the diesel oil circuit is blocked
• the engine oil is insufficient
• the cylinder wears