关节镜检查对下列哪一关节的滑膜结核早期诊断具有独特价值()
A.肘关节
B.腕关节
C.膝关节
D.髋关节
参考答案:C
Just like fingerprints, each person's DNA is _________ unless he has a twin. [ ]
A. unusual
B. normal
C. various
D. unique
标准稠度用水量测定方法可以用()法,若发生争议时以()为准。