A.学生电源交流输出
B.学生电源直流输出
C.干电池3节
D.蓄电池
答案:A
用所给单词的正确形式填空。
1. We (has) short and straight hair.
2. Her eyes (be) blue, but (I) eyes are black.
3. Jenny's hair is long, but my hair is (long).
4. My mother is (young) than my father.
5. Is she (tall) than you?
6. Who (have) three hairs?
7. (do) Bob wear glasses?
按决策层次分类,将管理信息分为:战略信息,战术信息和()。
A.业务信息
B.流动信息
C.固定信息
D.生产信息