投标与否的决策为()
A.选择性决策
B.定位性决策
C.方法性决策
D.方向性决策
参考答案:A
. Seeing the ______ flood, she was _____ to take the boat.
A.scaring, scaring
B.scared, scared
C.scaring, scared
D.scared, scaring
公害事件是因()造成的在短期内人群大量发病和死亡事件