Question

construction
the floor jack is usually made of steel and sometimes aluminum. the floor jack is designed to support a lot of weight and remain stable.
the floor jack consists of these parts:

• support cup.
• lifting arm.
• control pedal.
• operating handle.
• hydraulic cylinder.
• wheels.

what materials are used in the construction of this floor jack to give it strength?
plastic.
aluminum.
rubber.
steel.

Explanation:

The text states that the floor - jack is usually made of steel and sometimes aluminum and is designed to support a lot of weight. Plastic and rubber are not mentioned as materials for strength in the construction of this floor jack.

Answer:

B. Aluminum, D. Steel