下列哪些不是痰饮病的常见病因（）
A.外感寒湿
B.饮食所伤
C.情志失调
D.劳欲所伤
E.久病体虚，年高体弱
参考答案：C
--- I want to know whether the day I am looking forward to will come today or tomorrow.
--- Does that make any difference?
A．when
B．why
C．that
D．on which
采煤工作面倾角大于多少度时，必须有防止煤（矸）窜出刮板输送机伤人的措施？
