单项选择题
A.外环回 B.内环回 C.不环回 D.未装载
A.C-12->VC-12->TU-12->TUG-2->VC-3->AU-4->AUG B.C-12->VC-12->TU-12->VC2->TUG-2->TUG-3->AU-4->AUG C.C-12->VC-12->TU-12->TUG-2->TUG-3->VC-4->AU-4->AUG D.C-12->VC-12-->TU-12->TUG-2->VC-3->TUG-3->AU-4->AUG
A.20个 B.30个 C.40个 D.60个
A.紧急告警 B.主要告警 C.次要告警 D.没任何告警
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