结核结节的构成成分有
A. 干酪样坏死
B. 上皮样细胞
C. 郎罕巨细胞
D. 成纤维细胞
E. 淋巴细胞
肺结核原发综合症包括
A. 原发病灶
B. 肺门淋巴结结核
C. 结核性淋巴管炎
D. 结核球
E. 局灶性肺结核
what's the definition of vowel(s)?
The English pure vowels can be classified according to
A. the position of the lips.
B. the height of the raised part of the tongue.
C. the dgree of obstruction to the flow.
D. the part of the tongue raised.
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