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问题 单项选择题

是对企业生产进行准备和提供保证的重要内容，将企业生产活动中的产品设计与制造相连接的是( )。

A．生产管理
B．生产工艺管理 C．生产质量控制 D．项目设计

答案

参考答案：B

单项选择题

Playing eighteenth-century music on the instruments of that period provides valuable information about how the music originally sounded. Eighteenth-century instruments cannot be played without being restored, however, and restoring such an instrument destroys all of the information that researchers could obtain from it about eighteenth-century instrument-making techniques.
If the statements above are true, which of the following must be true on the basis of them

A．Eighteenth-century instruments cannot be used to provide information about the original techniques used in playing such instruments if they have been restored.

B．Eighteenth-century instruments that have been restored can provide information only about how eighteenth-century music originally sounded.

C．Eighteenth-century instruments are the only source of information about the instrument-making techniques of that period.

D．An eighteenth-century instrument that has not been re stored can provide more information than can one that has been restored.

E．(E) An eighteenth-century instrument cannot serve as a source of new information about eighteenth-century instrument-making techniques once it can be played.
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单项选择题

稻田里，农民要拔掉稗草；人工鱼塘里，养殖工人要定期清除肉食性鱼类。用生态学的观点看，这是为了（）

A.调整能量流动关系，使之流向对人类最有益的部分

B.增强生态系统恢复力稳定性

C.通过人为方式，保持自然生态系统平衡

D.科学规划，实现能量的多级利用
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