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问题 填空题

SQL SELECT语句中的【 】用于实现关系的选择操作。

答案

参考答案：WHERE

解析：SQL SELECT语句中的WHERE短语用来进行查询条件的筛选，相当于关系的选择操作。

单项选择题

依据《职业卫生技术服务机构监督管理暂行办法》，甲级资质由（）认可及颁发证书。

A.省级安全生产监督管理部门

B.国家安全生产监督管理总局

C.国务院

D.省级职业卫生管理部门
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单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

In isosceles triangle ABC, what is the value of ∠C ？（）
(1) The measure of ∠B is 47°
(2) The measure of ∠A is 90°

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.
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