单项选择题

A．Instructions that come with a product.
B．The quantity of a product.
C．The quality of a product.
D．Warranties that cover a product.
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单项选择题
A．In cold zones.B．In hot zones.C．In temperate zones.D．Any climate.
A．In cold zones.
B．In hot zones.
C．In temperate zones.
D．Any climate.
单项选择题
A．Labour and education.B．Transportation and insurance.C．Utilities and repairs.D．Products and services.
A．Labour and education.
B．Transportation and insurance.
C．Utilities and repairs.
D．Products and services.
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