一个Access数据库不能大于 【12】 字节。
参考答案：1GB
解析： 该题旨在考察考生对于数据库的一些限制的了解。因为只有知道了使用数据库的限制，才能正确合理的使用数据库。在使用数据库之前，用户需了解以下相关限制。一个表最多可有255个字段和32个索引；多字段索引最多可有10列，并且列的总长度不能超过 255个字节；除备注字段和OLE对象之外，表中的一行的内容不能大于约2KB；一个Access数据库不能大于1GB字节。
| The first and most important agents of socialization are the people who care for infants. In the earliest months, messages from nurturers constitute the child’s basic understanding of the world around it. This is the infant’s first introduction to the language that shapes perception and elicits emotion. Another powerful source of information and socialization is the friendship of peers. Peers are equals that one can deal with on the same level as oneself, whereas parents are superiors. The heavy emotional overlay of family relationships makes some kinds of learning difficult. Much formal socialization is placed in the hands of professionals. Teachers from kindergarten on are specifically designated agents of socialization. Ideally, a teacher is one who has both knowledge and the skills to present it. During the course of teaching their subjects, classroom instructors provide role models and attempt to convey the excitement of learning itself. In earlier times, parents, friends and teachers would comprise the list of primary childhood socializers. Children’s books, comics and magazines might also have been mentioned as sources of information on norms and role models. Today one must add three powerful indirect or nonpersonal socialization agents: radio, movies and television. Many people learn about politics, form a vision of well-being, and develop attitudes towards others from what they see on the screen and hear through the speakers. |
The child’s basic understanding of the world around it is formed ______.
A．at kindergarten
B．in the earliest months
C．by classroom instructors
D．through interaction with parents