¿Cuál de los siguientes enun- ciados sobre el polipasto de cadena es correcto?

a. Un mecanismo para
levantar carga con
cadena y una garrucha
a cadena son lo mismo.
b. Siempre se debe utilizar
un obturador con un
mecanismo para levantar
carga con cadena.
c. Un mecanismo para
levantar carga con
cadena y un polipasto de
cadena no son lo mismo.
d. Están diseñados de
manera que la cadena
pueda rodear la carga.


Answer: B

Trades & Technology

You might also like to view...

What are the advantages and limitations of a “directed-diffusion” approach in a sensor network? Explain clearly.

What will be an ideal response?

Trades & Technology

How did Spanish interaction with Native Americans differ from that of the English?

A. The Spanish killed and enslaved Native Americans; the English did not. B. The English killed and enslaved the Native Americans; the Spanish did not. C. The English intermarried with Native Americans; the Spanish did not. D. The Spanish shunned the Native Americans; the English did not. E. The Spanish integrated aspects of Native American culture into their own; the English did not..

Trades & Technology

5 + 3^2 =

A) 16 B) 14 C) 64 D) 11

Trades & Technology

What can cause hard steering on a vehicle equipped with a hydraulic power assisted steering system?

A) Low or contaminated power steering fluid B) Slipping power steering pump drive belt C) Low tire pressure D) Any of the above

Trades & Technology