生产函数是指（  ）。A、企业不断进行投入的活动B、企业将投入转化为产出的过程C、企业从生产到销售的全过程D、企业研究和开展的活动

单项选择题Which of the following items is included in China's GDP? A、final goods and services that are purchased by the central government. B、intermediate goods that are produced in China but that are unsold at the end of the GDP accounting period. C、goods and services produced by foreign citizens working in China. D、All answers are correct.

单项选择题()对所移交的会计凭证、会计账簿、会计报表和其他有关资料的合法性、真实性承担法律责任。