中国影视艺术的民族风格和民族特色主要体现在哪几个方面？
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老年人气郁质发病倾向是（）。
A. 易患癥瘕及痛证
B. 感邪易从寒化
C. 易患不寐
D. 易患郁证等
A tug may be in danger of tripping when（）.
A. towed sideways by an overwhelming force on the towline
B. her tow moves parallel to and forward on either side of the tug
C. the tow is no longer directly astern but moves up on her quarter
D. All of the above
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