在同一个平面内不相交的两条线段叫平行线.______.(判断对错)
平行的含义:在同一平面内,不相交的两条直线叫做平行线;
故答案为:√.
______ the works of Leonardo da Vinci, the Louvre Museum has more than 6,000 other European paintings, ranging from the13th century to the 19th century.
A.Except for
B.Except
C.In addition
D.Apart from
关于原发型肺结核,下列错误的是()
A.初次感染病灶多在上叶底部、中叶或下叶上部,常邻近胸膜
B.结核菌可引起淋巴管炎和淋巴结炎
C.原发病灶和淋巴结都不发生干酪样坏死
D.多发生在儿童
E.症状多轻微而短暂