有SQL语句： SELECT学院．系名，COUNT(*)AS教师人数 FROM 教师，学院； WHERE 教师系号=学院．系号GROUP BY学院．系名 与如上语句等价的SQL语句是

有SQL语句：SELECT学院，系名，COUNT（*）AS教师人数FROM教师，学院;WHERE教师.系号＝学院.系号GROUP BY学院.系名与如上语句等价的SQL语句是：

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

If necessary to avoid collision or allow more time to（）the situation，a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion．

什么是条件转向语句（IF-THEN）？

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

if条件控制语句中，if后面的{}可有可无，意义一样。（）

If you do not know the subject, you will not understand what is said or written, even if English is your mother （） what is said or written.

ASP中，使用If…Else条件语句，此语句的结束标志是End。（）