Container House Production Test Questions

I. Multiple-Choice Questions
1. C
Container length specifications typically include four types: 20 feet, 40 feet, 45 feet, and 10 feet (for special purposes). The common standards are the first three, but strictly according to the options, choose all four.
2. B
The container frame is primarily made of steel plates and aluminum materials. Aluminum is used to reduce weight and enhance corrosion resistance, while steel plates provide structural strength.
3. B
Final inspection includes assembly quality, functional testing (such as door opening/closing and ventilation), and appearance identification. Adhesion testing belongs to coating quality inspection and is not a routine inspection item.
4. A
The height of a 40-foot high cube container (HC) is 2.9 meters, while the height of a standard container is 2.59 meters. The high cube increases internal space.
5. B
The top structure adopts a composite design of steel plates and aluminum materials. Aluminum reduces weight, while steel plates ensure strength.

II. Multiple-Select Questions
1. ABCDE
Maintenance includes anti-rust treatment of steel plate surfaces, lubrication and replacement of door locks, cleaning of ventilation systems, repair of anti-slip coatings on floors, and reinforcement of corner fittings.
2. ABCDE
The internal structure includes a steel plate frame, floor (wood or steel), side walls (corrugated steel plates), top (steel plate or aluminum material), and ventilation system.
3. ABCD
The nameplate must indicate the owner's number (OWNER'S NO), type (TYPE), identification number (IDENTIFICATION NO), and manufacturing date (DATE MANUFACTURED).

III. Fill-in-the-Blank Questions
1. TEU (Twenty-foot Equivalent Unit)
The 20-foot container is the standard unit of measurement, abbreviated as TEU.
2. Lock Rod
The door lock is fixed to the corner fittings with a lock rod to ensure sealing.
3. Ventilation Holes
Ventilation holes are set on the top and side walls to regulate temperature and humidity and prevent cargo from getting damp.

IV. True/False Questions
1. B
The volume of a 40-foot container being twice that of a 20-foot container only holds true when the width and height are the same. In reality, the heights may differ (such as between high cube and standard containers).
2. B
The disaster resistance of container houses depends on structural design. Special reinforcement is required for 9-magnitude earthquakes and 13-level typhoons, which are not universal standards.
3. B
The metal shell can shield electrostatic fields, but lightning protection requires grounding devices. The metal shell alone cannot fully protect against lightning.

V. Short-Answer Questions
1. Advantages of Modular Housing

• High Construction Efficiency: Factory-prefabricated components are quickly assembled on-site, shortening the construction period by more than 50%.
• Cost Control: Standardized design reduces material waste and lowers labor costs by about 30%.
• Environmental Protection and Energy Efficiency: More than 80% of the materials are recyclable. Combined with solar panels and insulation layers, energy consumption is reduced by 40%.
• Flexibility: Supports relocation and functional modifications, adapting to various scenarios such as temporary housing and offices.

2. Treatment of Damage to Wallpaper or Gypsum Surfaces

• Small-Area Damage: Remove loose parts, fill cracks with gypsum, sand the surface smooth, and then reapply wallpaper or paint with waterproof coating.
• Large-Area Damage: Strip old materials down to the base layer, check for moisture or corrosion in the structure, replace moisture-proof boards, and then reapply wallpaper or gypsum boards.
• Moisture-Proof Treatment: Apply moisture-proof paint in the repaired area and reinforce the edges with sealant to prevent moisture penetration and secondary damage.