问答题
Part 1. Complete the sentences below with the words in the box. Change the form where necessary. Each word can be used only once. （20 points, 2 points each） device mode contrast campaign assess plagiarism undermine exemplify access acquire 2. Most students attend a university mainly to _________ the knowledge needed for their chosen profession.
acquire
单项选择题 DPSK属于： A、相位调制 B、幅度调制 C、频率调制 D、混合调制
多项选择题 可以用来判断现象之间相关方向的指标有（ ）。
单项选择题 45.在EXW条件下，货物被禁止出口的风险由（ ）负担
