企业管理信息系统正式投入使用后,企业管理人员从繁琐的事务性工作中摆脱出来,这种现象说明系统产生了()。
A、政治效益
B、间接经济效益
C、直接经济效益
D、市场效益
参考答案:B
听句子,缩写原文。()
A.Many animals and plants would die because they cannot survive the changing environment.
B.Many animals would be slaughtered, since they fail to adapt themselves to the existing outside world.
C.Most peoplewould feel sorry for the destiny of endangered species, if they become extinct on earth.
D.Most species would react fast enough to adapt themselves to the ever-changing conditions of nature.
在我国引起门静脉高压症的主要原因是 ( )。
A.酒精性肝硬化B.血吸虫病性肝硬化C.肝炎后肝硬化D.Budd-Chiari征E.肝外门静脉血栓形成