题目内容

Industrial gerontology is concerned with______.

A. how to mange older workforce
B. finding out how productive older workers can be
C. how to meet the challenge of the future
D. finding out what kind of people can stay after the retirement age

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在SQL Servet 2000中,若某数据库的故障还原模型为“完全”(FULL),则能够对该数据库进行的备份操作是

A. 仅完全备份
B. 仅日志备份
C. 仅完全备份和差异备份
D. 完全备份、差异备份和日志备份

民法就是名称叫做民法的法律文件。()

A. 正确
B. 错误

What does Chris order?

A. fish
B. steak
C. chicken

The primary purpose of the passage is to explain______.

A. the background and career of the astronomer Henrietta Leavitt
B. how and why various categories of stars vary in brightness
C. important uses of the camera as an astronomical tool
D. how a particular method of measuring astronomical distances was created

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