问答题

变电所自动化系统按照设备的功能被分为三层：变电所层、间隔层（或称单元层）、过程层（或称设备层）。

答案：是的，变电所自动化系统通常按照设备的功能和作用范围被分为三个层次，分别是：1. 变电所层（Station Level）：...

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单项选择题

The problem with the author before he overcame his fear of air travel is that ________.

A、he read too much about plane crashes and tried to avoid flying unconsciously
B、he wanted to take a private plane instead of a public one
C、he didn"t know air travel is safer than highway travel
D、he knew he was reluctant to fly but was unable to do anything about it

将绘本上的颜色单词抄写在作业本上。

答案：由于我无法直接看到绘本或作业本，因此无法为您抄写颜色单词。但是，我可以告诉您常见的颜色单词，并指导您如何将它们抄写到作业...