三七的止血功效是
A.凉血止血
B.收敛止血
C.化瘀止血
D.温经止血
E.养阴止血
参考答案:C
The fire was finally ______ after the building had ______ for two hours.
A.put off; caught fire
B.put away; been on fire
C.put out; been on fire
D.put out; caught fire
熟料粉化的原因?