（）滤镜可以通过转换像素和通过查找并增加图像的对比度在选区中生成绘画或印象派的效果。
最常用的一种基本数据模型是关系数据模型，在关系数据模型中用（）结构来表示学生实体及课程实体之间的选课联系。 ["二维表","网络","图","集合"]
You have a server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). On Server1, you have the following backup schedule: ·Normal backups every Saturday at 01:00 Differential backups every weekday at 02:00, except on Saturday You need to perform a complete manual backup of Server1 on Tuesday. The backup must not change which files are backed up during the next scheduled backup. Which type of backup should you perform? （） [" copy"," daily"," incremental"," normal"]
丰田汽车公司双VVT-i智能可变气门正时系统是一种控制（）的机构。 ["排气凸轮轴气门正时","进／排气凸轮轴气门正时","进气凸轮轴气门正时"]
按照《联合国国际货物销售合同公约》的规定，受盘人对（）内容提出更改或添加，应被视为实质性变更发盘条件。 ["价格","付款","质量和数量","交货时间和地点","单据份数"]
RGB颜色模式中，R代表（），G代表（），B代表（）。
