瘀血痹阻型胸痹心痛的主症，下列哪项是错误的（）
A.痛有定处
B.疼痛如刺如绞
C.可因暴怒而加重
D.心胸疼痛剧烈
E.遇阴雨天易发或加重
参考答案：E
Yi Jianlian is almost as _____ as Yao Ming in China. [ ]
A. popular
B. more popular
C. most popular
D. the most popular
电视摄像机的宽容度通常为（）
A.1∶16
B.1∶32
C.1∶64
D.1∶128
