brittanygibson6885 brittanygibson6885
  • 14-10-2017
  • History
contestada

Which african american below invented an early version of the gas mask? (1 point) elijah mccoy garrett morgan granville woods jan
e. matzeliger?

Respuesta :

thelonkpenn
thelonkpenn thelonkpenn
  • 15-10-2017
Garrett Morgan invented an early version of a gas mask.
Answer Link

Otras preguntas

two cover plates are welded to the rolled-steel beam as shown. using e = 200 gpa, determine (a) the slope at end a, (b) the deflection at end a.
the density of a 19.0% by mass ethylene glycol (c2h6o2) solution in water is 1.02 g/ml .
Which of the following processes is NOT a part of external respiration?a. The exchange of oxygen and carbon dioxide between the lungs and blood by diffusion.b.
what recent fcc regulation makes the internet more like a utility?
solve the problem. a researcher wants to perform a hypothesis test to determine whether the mean length of marriages in california differs from the mean length
which statement best conveys the role of intuition in nurses' problem solving?
which of the following is not one of the typical portal revenue sources?
for initial conditiona claculate the free response of the system of problem 4.2 plot the resposne x1(t) x2(t)
A __________ is one in which the tasks, people and technologies necessary to do thework of the business are divided into separate groups with increasingly forma
give an algorithm that determines whether or not a given undirected graph g = (v, e) contains a cycle. your algorithm should run in o(v ) time, independent of |