颈性眩晕是指
A．伴有呼吸困难的眩晕
B．伴有颈部酸痛的眩晕
C．颈部活动时引起的眩晕
D．先有颈部不适后有眩晕
E．颈肩部神经受刺激引起眩晕
参考答案：C
Viewers will have _____ second chance to see Saturday's concert on _____. Channel 4 tonight. [ ]
A. a; the
B. the; the
C. the; /
D. a; /
腹腔引流的并发症有
A．感染
B．出血
C．慢性窦道形成
D．引流管滑脱
E．肠坏死
