无刷交流发电机的励磁绕组是()。 ["转动的","固定的","铝质的","单匝的"]
无线电常用度量单位的词头p的意义分别为() ["10-12<\/sup>","1012<\/sup>","10-9<\/sup>","109<\/sup>"]
社会地位赋予功能
如遇乘客乘坐网约车()去郊区或到运营区域外的目的地,需额外收取空驶费,网约车驾驶员应向乘客事先说明。 ["包车","双程","拼客","单程"]
国民经济活动中的交易主要有() ["货物和服务交易","分配交易","金融交易","其它积累交易","内部交易"]
诸子百家