V one permit should never be valid more than of one working shift.

一个动火证只适用一个班次的作业，最多一天有效。

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Among employees this situation has resulted in a decided shift in desire: instead of working their way up in an organization, many now prefer to work their way out.

在员工中，这种情况已经导致了一种明确的愿望转变：与其在组织中靠自己的方式往上爬，许多人现在更愿意靠自己的方式摆脱困境。

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The International Agency for Cancer Research has previously identified working shift patterns that disrupt the body's natural "clock" as a probable cause of cancer.

BBC: 'Night shift link' to ovarian cancer

Dean was working a shift at the Home Depot, managing the electrical department, when the siren rang out.

WHITEHOUSE: Memorial Service for Missouri Tornado Victims

They also do a good job of replicating the sitdown feeling of driving, complete with the working gear shift, pedals and steering wheel.

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