A. Moane will at least study three more years. B. Moane began his Ph.D. studies less than three years ago. C. Moane has studied at least for three years. D. Moane has already begun his Ph. D.long befor 参考答案:C 答案解析:[听力原文] M: How long has Moane been studying for his Ph. D. Three years W: At least that long.
第22题: [单项选择]下列关于SQL语言特点的描述中,错误的是( )。 A. 语言非常简洁 B. 是一种一体化语言 C. 是一种高度过程化的语言 D. 可以直接以命令方式交互使用,也可以程序方式使用 参考答案:C 答案解析:[解析] SQL是一体化的语言,它可以完成数据库操作要求的所有功能,包括数据查询、数据操纵、数据定义和数据控制,是一种全能的数据库语言。SQL是一种高度非过程化的语言,不需要告诉计算机一步一步地怎么做
第23题: [多项选择]进口环节代征税包括( )。 A. 从价税 B. 从量税 C. 消费税 D. 增值税 参考答案:C,D