中学一级数学教师与小学高级数学教师属于同一（）

数学活动课是指学生通过数学实践活动获得经验，了解和掌握数学在日常生活中的应用，学会与他人进行数学合作与交流，从而实现新课程的教学目标。

口服补液及时纠正脱水，应用ORS，说法正确的是（）

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.

1998年以后，教育部的专业目录里规定了数学学科专业，包括数学与应用数学专业、（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

假如某因素与某病关系的病例对照研究结果的OR值为0.3（P＜0.01），最可能的解释是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。