Explain what a form-release agent is.
What will be an ideal response?
A form-release agent is a chemical that is either sprayed or brushed over the interior surfaces of the formwork so that the concrete placed in the formwork will not stick to it, allowing the formwork to be stripped off without damage to the formwork or the concrete.
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When drawing a roof plan, the first step in determining the roof shape is to trace the outline of the exterior walls and all _____.
A. interior support posts B. interior support attachments C. exterior support posts D. exterior support attachments
If two conductors carrying current in the same direction are placed near each other, the magnetic forces tend to ____.
A. push them apart B. pull them together C. have no effect D. cancel each other out
According to Vavilov and generally confirmed by later archaeological studies, which of the following is not a major center of origin for cultivated plants?
A) Mexico and Central America B) Turkey-Iran C) United States-Canada D) central China
Like a switch, the DLC is able to switch calls
Indicate whether the statement is true or false