能活血止痛,消肿生肌的药物组是()
A.郁金、丹参
B.川芎、延胡索
C.乳香、没药
D.自然铜、泽兰
E.牛膝、王不留行
参考答案:C
31. I just wonder ____ that delights the whole family so much.
A.what it is
B.what he does
C.how it is
D.how he does
γ射线料位计使用()作放射源,能够穿透钢板,γ射线料位计布置在干熄炉的外侧,属于()测量。