简述中国数学教育与国外数学教育的差异？

ANB指令是（）指令，ORB是（）指令，与and、or指令不同。

在以私有制为基础的商品经济条件下，价值规律具有很重要的作用和影响。下列表现中，不正确的为（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

数学模型就是对于一个现实对象,为了一个特定目的,根据其内在规律,作出必要的简化假设,运用适当的数学工具,得到的一个数学结构。数学结构就是指数学符号、( )、数学命题、( )等,这些基于数学思想与方法的数学问题。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。