当班人员要严格执行各项操作规程，防止事故发生。
On duty person must execute strictly the operation procedure to prevent accidents.
当班人员要严格执行各项操作规程，防止事故发生。
On duty person should carry out each operation procedure strictly to prevent accident.
当班人员要严格执行各项操作规程，防止事故发生。
On duty person should carry out each operation procedure strictly to prevent accident.
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