在工程网络计划中,某项工作的最迟开始时间与最早开始时间的差值为该工作的( )。
A.时间间隔B.搭接时距C.自由时差D.总时差
参考答案:A
After seeing the movie, _____. [ ]
A. the book was read by him.
B. the book made him want to read it.
C. he wanted to read the book.
D. the reading of the book interested him.
嗜酸性粒细胞的主要功能是()
A.吞噬抗原抗体复合物
B.吞噬细菌、细胞碎片
C.释放内源性致热原
D.产生抗体
E.产生补体