It is recommended that AC power supplies to instruments be protected by fuses or automatic circuit breakers rated at not more than 2 Amperes, and must be separated from any load current circuits.

最好使用交流电源供电，并为设备安装保险丝或额定电流小于2安培的自动断路器，自动断路器还必须与其他负载电流电路分离。

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The argument against JSP technology is not whether content and presentation can be separated, but whether they must be separated.

反对JSP技术的理由并不在于能否分离内容和表示，而是在于是否必须分离。

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Most core functionality must be separated into logical modules and to do their tasks, your applications must use the functions that these modules provide.

必须将最核心的功能分解成逻辑模块，要执行它们的任务，应用程序必须使用这些模块提供的函数。

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Hydrogen does not sit alone in nature and must therefore be separated from oxygen.

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He argues that the concepts of ageing and longevity must be separated.

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But whereas existing equipment must be left behind if the aircraft goes down and the pilot becomes separated -- now they can take the technology on the hoof.

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