CSLB General Building (B) Trade Practice Test

Câu hỏi luyện tập mẫu

Một vài câu hỏi thực tế từ ngân hàng miễn phí này, kèm giải thích đầy đủ. Dùng công cụ luyện tập ở trên cho toàn bộ.

1. 1. Arithmetic Reasoning

   A train travels at a constant speed of 60 miles per hour. How long will it take to travel 180 miles?

   • a.3 hours
   • b.2 hours
   • c.3.5 hours
   • d.4 hours

   Đáp án: a

   Giải thích: Time equals distance divided by speed. Dividing 180 miles by 60 miles per hour gives 3 hours. Keeping the units consistent lets the miles cancel and leaves hours.

2. 2. Arithmetic Reasoning

   In a class of 30 students, 3/5 are girls. How many boys are in the class?

   • a.12
   • b.10
   • c.15
   • d.18

   Đáp án: a

   Giải thích: Three fifths of 30 is 18 girls. Subtracting 18 girls from 30 total students leaves 12 boys. The fraction of boys is the remaining two fifths of 30, which also equals 12.

3. 3. Word Knowledge

   "Novice" most nearly means:

   • a.beginner
   • b.expert
   • c.leader
   • d.traitor

   Đáp án: a

   Giải thích: A novice is a person new to a field or activity. Beginner is the nearest match. An expert, being highly skilled, is the opposite.

4. 4. Paragraph Comprehension

   Bees play a vital role in agriculture. As they move from flower to flower collecting nectar, they carry pollen between plants, allowing many crops to produce fruit. The passage indicates that bees help crops by:

   • a.carrying pollen between plants
   • b.eating harmful insects
   • c.watering the soil
   • d.keeping the ground warm

   Đáp án: a

   Giải thích: The passage states bees carry pollen from flower to flower, which allows crops to produce fruit. That matches the correct choice. The other answers are not mentioned.

5. 5. Mathematics Knowledge

   The area of a triangle with base 10 and height 6 is:

   • a.30
   • b.16
   • c.60
   • d.45

   Đáp án: a

   Giải thích: The area of a triangle equals one half times base times height. That is 0.5 times 10 times 6, which equals 30 square units. Forgetting the one-half factor gives the incorrect value 60.

6. 6. Mathematics Knowledge

   What is the value of 6 divided by 0.5?

   • a.12
   • b.3
   • c.6
   • d.0.083

   Đáp án: a

   Giải thích: Dividing by 0.5 is the same as multiplying by 2. So 6 divided by 0.5 equals 12. Dividing by a number less than 1 produces a result larger than the original.

7. 7. General Science

   The Richter scale is used to measure the strength of:

   • a.Earthquakes
   • b.Hurricanes
   • c.Tornadoes
   • d.Floods

   Đáp án: a

   Giải thích: The Richter scale measures the magnitude, or energy released, of earthquakes. Hurricanes and tornadoes are rated on different scales based on wind speed.

8. 8. Electronics Information

   A component that allows current to flow in only one direction is a:

   • a.diode
   • b.resistor
   • c.capacitor
   • d.switch

   Đáp án: a

   Giải thích: A diode conducts current in one direction and blocks it in the other, acting like a one-way valve. This property makes diodes useful for converting AC to DC.

9. 9. Mechanical Comprehension

   Which of these is an example of an inclined plane?

   • a.A ramp
   • b.A wheelbarrow
   • c.A seesaw
   • d.A ceiling fan

   Đáp án: a

   Giải thích: A ramp is a flat surface set at an angle, which is the definition of an inclined plane. It makes raising a load easier by spreading the effort over a longer distance.

10. 10. Auto & Shop Information

    A spark plug is used to:

    • a.ignite the fuel-air mixture
    • b.cool the engine
    • c.filter the oil
    • d.charge the battery

    Đáp án: a

    Giải thích: In a gasoline engine, the spark plug produces an electric spark that ignites the compressed fuel-air mixture in the cylinder. This controlled ignition powers the piston stroke.