党的十七大报告指出:全党同志特别是领导干部都要讲党性、重品行、作表率。()
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You are building two forms. Each form has a button and a non-base table field. When the button is pressed, a complicated calculation is executed. The calculation is the same for both forms. The calculation code does not query or change the data in the database. When the calculation completes, it returns a single value to the non-base table field. To optimize performance and maintainability, which PL/SQL structure should be used? ()
A trigger in each form.
B. A subprogram in each form.
C. A stored subprogram in the database.
D. A subprogram in a library that is attached to each form.
车站必须按统一顺号连续使用货运记录用纸,并按编制日期和号码顺序登入()内。
发动机常用作减速、制动和下坡时保持车速不变的惯性制动,但在紧急制动时()。
A. 应脱档
B. 维持档位
C. 不起作用
D. 关闭点火开关