气虚发热的病机是（）
A．外感风寒，卫阳郁闭
B．阴液亏损，阳热偏亢
C．中气不足，清阳被郁
D．外邪入里，阳热内盛
参考答案：C
—Excuse me, sir. Could you tell me _______?
—At 2:00 p.m. [ ]
A. where the meeting was held
B. when the meeting will begin
C. when did the meeting begin
D. where will the meeting be held
煤的工艺性能包括哪些？
