【单选题】下列选项中( )与无线通信中的多径现象无关。
【单选题】According to the professor, why did Marshall McLuhan study popular culture?
A.
McLuhan wanted to understand the values of his students.
B.
McLuhan needed an interesting topic for his dissertation.
C.
McLuhan wanted to write stories for a popular magazine.
D.
McLuhan enjoyed watching television with his family.
【单选题】Mum, the phone is ringing, I guess either you or Dad ___________ on the phone.
【单选题】在吊缸中发现活塞环搭口很光亮,其原因是()。
【多选题】金融行业工作人员办理业务时,应做到四个有声:( )
【多选题】外汇是以外币表示的用来清偿国际间债权债务关系的支付手段和工具,汇率是以一种货币表示的另一种货币的价格。按汇率制定方法的不同,汇率可分为()。
【判断题】制造费用是为组织和管理生产而发生的各种直接成本。( )