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【单选题】
以下定义的4个视图中,能够进行更新操作的是________A.
CREATE VIEW S_MALE(,姓名) AS SELECT ,姓名 FROM student WHERE 班号='09031'
B.
CREATE VIEW S_G(,姓名,课程名,分数) AS SELECT S.,姓名,课程名,分数 FROM student S,score SC,course C WHERE S.=S
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反馈参考答案：
举一反三
【简答题】什么是蛋白质的变性作用?本质是什么?引起其变性因素有哪些?
【单选题】公司在解散清算过程中，清算组通过编制资产负债表、清点登记公司财产后发现，公司财产不足以清偿债务。这种情况下，清算组正确的处理方法是（ ）。
A.
报股东会决定
B.
向最大的债权人进行清偿
C.
向人民法院申请宣告破产
D.
按债务发生的时间先后进行清偿
【简答题】什么是蛋白质的变性作用? 常见的因素 其变性的本质是什么?举例说明现实生活中应用和避免蛋白质变性的例子。
【单选题】Mr. Bob, ______ as a manager for many years, found it hard to be an ordinary clerk again.
A.
having worked
B.
worked
C.
to have worked
D.
working
【简答题】蛋白质的变性作用是什么?其本质是什么?
【单选题】Which of the following allows the respondent to directly indicate their relative preferences for alternative responses?
A.
paired-comparison rating scales
B.
rank-order rating scales
C.
constant sums rating scales
D.
Likert scale
E.
Semantic differential scale
【单选题】According to the passage, early chartered trading companies are usually described as______
A.
irrelevant to a discussion of the origins of the modern multinational corporation
B.
interesting but ultimately too unusually to be good subjects for economic study
C.
analogues of nineteenth-century British trading firms
D.
rudimentary and very early forms of the modern multinational corporation
E.
important national institutions because they existed to further the political aims of the governments of their home countries
【简答题】作业,包含图片拍摄和视频拍摄,标识清楚每个作业的关键字。
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