下列属于SQL语言特点的是( )。Ⅰ、数据定义Ⅱ、数据控制Ⅲ、数据查询Ⅳ、数据操纵

下列属于SQL语言特点的是Ⅰ．数据查询Ⅱ．数据操纵Ⅲ．数据定义Ⅳ．数据控制

下列属于SQL语言特点的是 Ⅰ．数据查询 Ⅱ．数据操纵 Ⅲ．数据定义 Ⅳ．数据控制

下列属于SQL语言特点的是Ⅰ.数据查询 Ⅱ. 数据操纵 Ⅲ. 数据定义 Ⅳ. 数据控制

有SQL语句： SELECT * FROM 教师 WHERE NOT (工资＞3000 OR 工资＜2000) 与如上语句等价的SQL语句是

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

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.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。