1. ______ is one of the most useful discovery of man which paved the way to the numerous inventions from the simple tool

[answerhappygod]

1. ______ is one of the most useful discovery of man which pavedthe way to the numerous inventions from the simple tools to themost sophisticated gadgets making what originally seemed to beimpossible become a reality.
a. ion
b. watt
c.electricity
d.circuit
2. No exit enclosure shall be used for any purpose other thanfor means of egress.
a. true
b. false
3. ______ is type of reducer pipe fittings which is likecone-shaped with gradual decreasing around the pipe but inthis case accumulation of air may possible and it results incavitation.
a. concentric
b. eccentric
4. It is a line established by two separate points in space.
a. axis
b. hierarchy
c.symmetry
d. datum
5. Per the Architectural Code, what is the space factor of anAuditorium?
a. 0.4
b. 2.0
c. 1.0
d. 1.5
6.It contains one or more alloying elements other than carbon,generally manganese and silicon.
a. carbon steel
b. stainless steel
c.alloy steel
d. High-strength low alloy steel
7. The aggregates that retained on 4.75mm sieve is_______while ________. passed on 4.75mm sieve.
a. fine, fine
b. course, course
c.course, fine
d.fine ,course
8. This is also known as retarding force.
a. frictional force
b.normal force
d.resultant force
c.weight