在资源管理器中，工具栏中"向上"按钮的作用是（）

在资源管理器中，如何显示／隐藏工具栏？

口服补液及时纠正脱水，应用ORS，说法正确的是（）

在Word中，如果要撤销上一步操作可以按快捷键（）。

在Windows XP资源管理器中调用工具栏可单击（）菜单。

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。