Concrete construction can either be done as cast-in-place concrete or precast concrete. Give three advantages of precast concrete.
What will be an ideal response?
Precast concrete members are fabricated in a plant. Therefore: (i) weather does not impose limitations. (ii) greater quality control in strength of concrete and surface finish is achieved in precast members and (iii) members are cast at the ground level in standard-size, removable formwork, substantially reducing formwork cost.
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a. removable b. wireless c. battery-powered d. very heavy
What should be used to check valve seating?
A. machinist's blue B. dial indicator C. dial bore gauge D. plastigage
When the system pressures are lower than the pressure in the refrigerant tank, such as when the system has just been evacuated or if the system is out of refrigerant, refrigerant can be added to both the high and low pressure sides of the system.
Answer the following statement true (T) or false (F)
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Indicate whether the statement is true or false