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古书的注释对我们今天阅读古籍有什么意义？

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吉林银行电话银行是否需要开通，怎样收费？

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基站环境告警箱能不能提供以下哪个告警功能（）

A. 浸水
B. 风扇告警
C. 火警
D. 烟雾

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（）是指谈判的一方故意装出糊里糊涂、惊慌失措、犹豫不决、反映迟钝，以此来松懈对方的意志，达到后发制人的目的。

A. 浑水摸鱼策略
B. 疲劳轰炸策略
C. 化整为零策略
D. 大智若愚策略

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Examine the structures of the EMPLOYEES and TAX tables. EMPLOYEES EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2 (30) JOB_ID VARCHAR2 (20) SALARY NUMBER References MGR_ID NUMBER EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT _ID column of the DEPARTMENT table TAX MIN_SALARY NUMBER MAX_SALARY NUMBER TAX_PERCENT NUMBER Percentage tax for given salary range You need to find the percentage tax applicable for each employee. Which SQL statement would you use?（）

A. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary BETWEEN t.min _ salary AND t.max_salary
B. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary > t.min_salary, tax_percent
C. SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE MIN(e.salary) = t.min_salary AND MAX(e.salary) = t.max_salary
D. You cannot find the information because there is no common column between the two tables.

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