Building Materials
In the method of condensation polymerization,

All of these
The reaction proceeds with an evolution of hydrogen chloride
The reaction proceeds with an evolution of ammonia
Low-molecular substances are removed from the high molecular substance

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Building Materials
Priming consists of

None to these
8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
One part of white lead, 8 parts of chalk and one part of linseed oil

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