采购有一个共同的目的,即公平、()地完成采购作业。
A.公正和公开
B.公正及合理
C.公开和科学
D.公正和有效
参考答案:D
Mary would never do anything that was not _________ of by her parents in order not to make them unhappy.
A.consisted
B.allowed
C.approved
D.informed
结核病的主要传播途径是:()
A.消化道
B.呼吸道
C.泌尿生殖道
D.血液
E.皮肤