∼H ⊃ ∼B

question 167

Multiple Choice

∼H ⊃ ∼B

• A) MT-valid.
• B) Invalid.
• C) MP-valid.
• D) DS-valid.
• E) DA-invalid.

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Definitions:

Trailer Front

The foremost part of a trailer, often designed to connect to the towing vehicle and includes the hitch among other components.

Upper Coupler

The component at the front of a semi-trailer that connects to the fifth wheel of a truck tractor, transferring vertical and horizontal forces between the truck and trailer.

Natural Gas

A fossil fuel consisting mainly of methane, used as an energy source for heating, cooking, and electricity generation.

Domestically Sourced

Refers to products or materials that are obtained from within the country of manufacture, rather than imported.