按照预测目标时间的长短划分,邮政企业的需做的预测类型有()。
A.远期预测
B.长期预测
C.中期预测
D.短期预测
参考答案:B, C, D
22. _____ computer has been proved to be _____ important aid in classroom teaching.
A.The; an
B.The; the
C.A; the
D.A; /
临诊怀疑动物为肝炎时利用血清检查()
A.黄疸指数
B.尿胆红素
C.血清淀粉酶
D.脂肪酶
E.肌酸激酶