(Microwave devices) can be passive.Logical formLearned from9 sentences. Coolers can be passive.Logical formLearned from9 sentences. A concept can be passive.Logical formLearned from9 sentences. A hope can be passive.Logical formLearned from9 sentences. A business can be passive.Logical formLearned from9 sentences. A government can be passive.Logical formLearned from9 sentences. A recruitment can be passive.Logical formLearned from9 sentences. Energy can be passive.Logical formLearned from9 sentences. A concern can be passive.Logical formLearned from9 sentences. A challenge can be passive.Logical formLearned from9 sentences. A viewer can be passive.Logical formLearned from9 sentences. Attempts can be passive.Logical formLearned from9 sentences. A collusion can be passive.Logical formLearned from9 sentences. A formation can be passive.Logical formLearned from9 sentences. A (rfid technology) can be passive.Logical formLearned from9 sentences.