# 1多選題41. He distinguishes entrepreneurs to employees, with former with uncertain income and the latter with fixed income.a) Richard Cantillonb) Frank Knightc) Alfred Marshalld) Joseph Alois Schumpeter
# 2多選題42. He expanded the idea of risk bearing with innovation. a) Richard Cantillonb) Frank Knightc) Alfred Marshalld) Joseph Alois Schumpeter
# 3多選題43. The first to specify entrepreneurship function as under pure uncertainties within a system.a) Richard Cantillonb) Frank Knightc) Alfred Marshalld) Joseph Alois Schumpeter
# 4多選題44. He emphasized that demand and supply determine the price and output of a good. a) Richard Cantillonb) Frank Knightc) Alfred Marshalld) Joseph Alois Schumpeter