Discuss products and services that can be marketed in information professionals​

Technician a says the harmonic balancer may be attached to the crankshaft using a woodruff key and center bolt. technician b says the harmonic balancer may be attached to the crankshaft using a square key and center bolt. who is correct? choose one answer. a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

Fill in the a is a social institution that undertakes the distribution of power, determining goals, and making choices for society.

《riddle》 a man is stranded on an island covered in forest. one day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. the fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process. there are cliffs around the island so he can't jump off. how can the man survive the fire? (there are no buckets or any other means to put out the fire.)