【单选题】Listen to the dialogue. Then answer the questions from 1 to 5. 1. What is the probable relationships between the two speakers?
B.
Customer and shop assistant.
【单选题】The book, Dialogue Concerning the Two Chief World Systems ______.
A.
was published secrectly
B.
did not get the permission from the pope
C.
supported Copernicanism publicly
D.
was immediately accepted throughout Europe
【简答题】RF物流系统的硬件主要由______、______与服务器构成。
【简答题】RF物流系统的硬件主要由______、______与服务器构成。