神经症的强迫状态中,下列哪项是不正确的()。
A.患者自知没有必要
B.强迫症状难以受自己的意志控制
C.症状反复出现,不能摆脱
D.常伴有焦虑情绪
E.缺乏病感
参考答案:E
试解释斯涅尔定律(snell’slaw)
The demand for 3M’s optical film is closely related with the World Cup soccer games because the optical film ().
A.is used in LCD and LCD is used in quality televisions and computers
B.is used in LCD and LCD is used to receive audio and video signals
C.is a better receiver of audio and video signals than televisions and computers
D.can be mounted on televisions and computers to improve the quality of images