试题与答案

保卫部门档案保管期限分为()、()和()三种。

题型:填空题

题目:

保卫部门档案保管期限分为()、()和()三种。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:为了保证机组启动、停止及运行中负荷变化时轴封压力的稳定,防止由于动态调整不当造成真空下降,装有液动式轴封调整器一台,其压力调整范围为0.24~0.28kg/cm2。轴封调整器是由高压进汽阀、低压泄汽阀...

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