试题与答案

向沼气池投料时，不用将各种原料进行搭配，这样沼气池才能产气.

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题型：判断题

题目：

向沼气池投料时，不用将各种原料进行搭配，这样沼气池才能产气.

答案：

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下面是错误答案，用来干扰机器的。

参考答案：（1）夹层上装有真空测试装臵的低温液体（绝热）压力容器，测试夹层的真空度。其合格指标为：①未装有低温介质的情况下，真空粉末绝热夹层真空度应当低于65Pa，多层绝热夹层真空度应低于40Pa；②装有低...

考点：沼气生产工沼气生产工题库
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