Employers should install equipment to prevent objects from falling off and provide other protective equipment for all objects in the workplace that are likely to fall. What should workers wear?

• goggles
• safety shoes
• work gloves
• safety helmet

How many meters should be added to the maximum width of the stacker for one -way road of the stacker?

• 1 meter
• 2 meters
• 3 meters
• 4 meters

What does a higher engine oil grade number indicate about the viscosity?

• stronger viscosity
• weaker viscosity
• unchanged
• not necessarily

Which of the following is not the steering type of the stacker?

• orbital type
• folding waist type
• runner type
• shaft type

What is the relationship between the braking power of the br ake and the area of the friction surface?

• proportional to
• inversely proportional to
• proportional to inverse square
• irrelevant

What are the most commonly used packaging materials in industrial packaging?

• woods
• plastic materials
• corrugated paper
• metal materials

What is meant by "first packaging" in the packaging classification?

• item packaging
• interme diate packaging
• exterior packaging
• commercial packaging

For the stopped stacker, can those who have taken equipment or measures to prevent workers from falling down carry operators?

• Yes
• No
• according to the employer's regulations
• according to site conditions

What is the appearance of the important operating procedures, methods and other related marks in the marking besides the color classification?

• round
• rectangular
• triangle
• trapezoid

When the stacker starts the engine inspection, the combustion status is judged to be incomplete combustion (too rich in oil and gas). What is the color of its exhaust smoke?

• colorless
• a little light blue
• white
• black