政府干预理论是凯恩斯就业理论和经济学说的核心。()<br>参考答案：错误

工伤保险实行个人不缴费原则。()

The forty years from the 1930s to the 1970s was an important period

A. in the development of air transportation
B. the earliest passenger flights were successfully operated
C. to make travel easy and pleasant for the passengers
D. to provide different services
E. the shortage of qualified pilots
F. traveling by air was very cheap

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社会保险基金主要来自于用人单位和职工缴纳的社会保险费，没有国家财政的投入。()
参考答案：错误

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Air transport companies use different planes__________.

A. in the development of air transportation
B. the earliest passenger flights were successfully operated
C. to make travel easy and pleasant for the passengers
D. to provide different services
E. the shortage of qualified pilots
F. traveling by air was very cheap

查看答案

政府干预理论是凯恩斯就业理论和经济学说的核心。()参考答案：错误

工伤保险实行个人不缴费原则。()

The forty years from the 1930s to the 1970s was an important period

社会保险基金主要来自于用人单位和职工缴纳的社会保险费，没有国家财政的投入。()参考答案：错误

Air transport companies use different planes__________.

政府干预理论是凯恩斯就业理论和经济学说的核心。()
参考答案：错误

社会保险基金主要来自于用人单位和职工缴纳的社会保险费，没有国家财政的投入。()
参考答案：错误