The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）...

第1题

[多选题] Which three are true regarding the use of outer joins? （）

A、You cannot use IN operator in a condition that involves an outerjoin. B、You use (+) on both sides of the WHERE condition to perform an outerjoin. C、You use (*) on both sides of the WHERE condition to perform an outerjoin. D、You use an outerjoin to see only the rows that do not meet the join condition. E、In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outerjoin. F、You cannot link a condition that is involved in an outerjoin to another condition by using the OR operator.

点击查看答案

第2题

[多选题] Which three are true regarding the use of outer joins?（）

A、You cannot use IN operator in a condition that involves an outerjoin. B、You use (+) on both sides of the WHERE condition to perform an outerjoin. C、You use (*) on both sides of the WHERE condition to perform an outerjoin. D、You use an outerjoin to see only the rows that do not meet the join condition. E、In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outerjoin. F、You cannot link a condition that is involved in an outerjoin to another condition by using the OR operator.

点击查看答案

第3题

[多选题] Which three are true regarding the use of outer joins? （）

A、You cannot use IN operator in a condition that involves an outerjoin. B、You use (+) on both sides of the WHERE condition to perform an outerjoin. C、You use (*) on both sides of the WHERE condition to perform an outerjoin. D、You use an outerjoin to see only the rows that do not meet the join condition. E、In the WHERE condition, you use (+) following the name of the column in the table without matching rows, to perform an outerjoin. F、You cannot link a condition that is involved in an outerjoin to another condition by using the OR operator.

点击查看答案

第4题

[单选题] “Flooding back” is a condition where the liquid refrigerant （）.

A、vaporizes in the condenser B、reaches the compressor through the suction line C、flashes in the liquid line D、condenses in the receiver

点击查看答案

第5题

[单选题] Which SQL statement accepts user input for the columns to be displayed, the table name, and the WHERE condition?（）

A、SELECT &1, "&2" FROM &3 WHERE last_name = '&4'; B、SELECT &1, '&2' FROM &3 WHERE '&last_name = '&4''; C、SELECT &1, &2 FROM &3 WHERE last_name = '&4'; D、SELECT &1, '&2' FROM EMP WHERE last_name = '&4';

点击查看答案

第6题

[单选题] We’ll see（）the compasses are in good condition.

A、if B、how C、when D、where

点击查看答案

第7题

[单选题] Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition?（）

A、SELECT &1, "&2" FROM &3 WHERE last_name = '&8'; B、SELECT &1, '&2' FROM &3 WHERE '& last_name = '&8'; C、SELECT &1, &2 FROM &3 WHERE last_name = '&8'; D、SELECT &1, '&2' FROM EMP WHERE last_name = '&8';

点击查看答案

第8题

[单选题] The term restricted visibility，when used in the Rules，refers to（）.

A、situations when you can see vessels on radar that you cannot see visually B、visibility of less than half a mile C、any condition where visibility is restricted D、visibility where you cannot see shore

点击查看答案

第9题

[单选题] The term restricted visibility，when used in the Rules，refers to（）.

A、Situations when you can see vessels on radar that you cannot see visually B、Visibility of less than half a mile C、Any condition where visibility is restricted D、Visibility where you cannot see shore

点击查看答案

第10题

[] Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition? （）

A、A. SELECT &1, "&2" FROM &3 WHERE last_name = '&8'; B、B. SELECT &1, '&2' FROM &3 WHERE '& last_name = '&8'; C、C. SELECT &1, &2 FROM &3 WHERE last_name = '&8'; D、D. SELECT &1, '&2' FROM EMP WHERE last_name = '&8';

点击查看答案

The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.

请使用微信扫码支付