诊断Crohn病最有意义的病理改变是()
A.全壁性炎症
B.裂隙样溃疡
C.非干酪性肉芽肿
D.干酪性肉芽肿
E.瘘管形成
参考答案:C
Such legal entities provide the means for international cooperation and support of macroprojects related to the moon and mars that encourage global private sector participation.
A.existences
B.vitalities
C.persistences
D.complicities
科技工作者的团结合作精神主要体现在()方面。
A.合作意识
B.合作精神
C.互利互惠
D.独立自主