皮皮学，免费搜题
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【单选题】
某数据库要求主表中没有相关记录时就不能将记录添加到相关子表中,则应该在编辑表关系中设置
A.
输入掩码
B.
实施参照完整性
C.
级联更新相关字段
D.
验证规则
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】蛋白质合成的终止密码子由下列哪种物质识别
A.
tRNA识别
B.
肽基转移酶识别
C.
起始因子识别
D.
终止因子识别
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【多选题】消费者总价值是指消费者购买某一产品与服务所期望获得的一组利益，包括( )
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产品价值
B.
服务价值
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D.
人员价值
E.
形象价值
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【单选题】对哲学基本问题第一方面的不同回答是( )
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划分唯物主义和唯心主义的标准
B.
划分一元论和二元论的标准
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D.
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【单选题】Read the following paragraph, and decide what this paragraph is mainly about.For the first six years, I was raised by my grandmother in rural Mississippi. At age 7, I moved to Milwaukee to live with m...
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the opening
B.
the author's self experiences
C.
the author's reflection
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【单选题】洋务运动中洋务派兴办的民用企业多数属于
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B.
商办
C.
官商合办
D.
官督商办
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【单选题】无线局域网的英文是
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【单选题】Why does the writer mention food and drinks in Paragraph 2?
A.
To show the problem of litter and waste.
B.
To show the problem of overproduction.
C.
To show how they are consumed.
D.
To show how they are wrapped.
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【简答题】I was born and raised in Hong Kong．For the past six years, I've been living in the United States．I work as a salesgirl in a large department store．Right now I'm going through a difficult period of my ...
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【单选题】Why does the writer mention food and drinks in Paragraph 2?
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查看完整题目与答案