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It exists T here has existed There exists It has existed
you are the stand-on vessel risk of collision exists a special circumstances situation exists the other vessel is dead in the water"
You are the stand-on vessel Risk of collision exists A special circumstances situation exists The other vessel is dead in the water"
should exist; masters exist; controls exists; masters exists; controls
it exists there exists it is existed there is existed
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looking out taking out finding out figuring out
definite to offer imaginary to provide practical to supply desirable to present
SELECT*FROM 学生 WHERE EXISTS； (SELECT*FROM 选课 WHERE学生号=学生.学生号) SELECT*FROM 学生 WHERE NOT EXISTS； (SELECT*FROM 选课 WHERE 学生号=学生.学生号) SELECT*FROM 学生 WHERE EXISTS； (SELECT*FROM 选课 WHERE 学生号=学生号) SELECT*FROM 学生 WHERE NOT EXISTS； (SELECT*FROM 选课 WHERE 学生号=学生号)
that is the first step to please the employer that is the requirement of the employer it enables him to know when to sell his services it forces him to become clearly aware of himself
definite to offer imaginary to provide practical to supply desirable to present
You’’ll certainly get what you want. It’’s no use dreaming. You should be dissatisfied with what you have. It’’s essential to set a goal for yourself.
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