I was invited ______ the English Evening Party. [ ]
A. at
B. for
C. to
D. in
答案:C
第6颈椎横突前结节的前方有()
A.颈总动脉
B.颈外动脉
C.椎动脉
D.颈内静脉
E.副神经
连接施主天线与直放机的馈线被拆断,产生的告警为?