Engineering Materials
The charge of the blast furnace consists of

Calcined ore, coke and limestone all in equal parts
Calcined ore (1 part), coke (8 parts) and limestone (4 parts)
Calcined ore (4 parts), coke (1 part) and limestone (8 parts)
Calcined ore (8 parts), coke (4 parts) and limestone (1 part)

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Engineering Materials
Aluminium bronze contains

92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
90% magnesium and 9% aluminium with some copper
10% aluminium and 90% copper

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Engineering Materials
The unit cells

Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice
All of these
Have the same orientation and their similar faces are parallel

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