题目内容

What were the social context like in the Progressive Era (1890 - 1920)

A. children 8 and 10 years old working at heavy machinery for 12 hours a day
B. a higher crime rate than at any time until the 1970s
C. Ku Klux Klan campaign against Catholics, with crosses burning on church lawns
D. starving immigrants arriving the ports

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The urbanization further strengthened an already booming popular entertainment establishment. Choose from the following, which is not included in the establishment:

A. Music
B. Dance
C. Vaudeville
D. Film

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Choose from the following, which was not the discussions proposed for the Radio Act of 1927

A. The principle of open access to all was rejected
B. Like the press and movie, radio would not be a regulated medium
C. Public interest is a core standard to distinguish quality radio from poor radio
D. Radio would become a commercial medium in private hands

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下列逻辑式中,不正确的逻辑公式是( )。

A+BC=(A+B)(A+C)
B. A+AB=A+B
C. A+1=1

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可以实现输出端直接连接的门电路是( )。

A. 异或门
B. 同或门
C. OC门
D. 三态门

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What were the social context like in the Progressive Era (1890 - 1920)

A. children 8 and 10 years old working at heavy machinery for 12 hours a day B. a higher crime rate than at any time until the 1970s C. Ku Klux Klan campaign against Catholics, with crosses burning on church lawns D. starving immigrants arriving the ports

The urbanization further strengthened an already booming popular entertainment establishment. Choose from the following, which is not included in the establishment:

Choose from the following, which was not the discussions proposed for the Radio Act of 1927

下列逻辑式中,不正确的逻辑公式是( )。

可以实现输出端直接连接的门电路是( )。

A. children 8 and 10 years old working at heavy machinery for 12 hours a day
B. a higher crime rate than at any time until the 1970s
C. Ku Klux Klan campaign against Catholics, with crosses burning on church lawns
D. starving immigrants arriving the ports