管理系统是分级的，不同级别的管理者对同一事物所需的信息也不同，信息也是分级的，不同级别的信息，有不同的属性，一般分为战略级、战术级。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

分级保护是指涉密信息系统的建设使用单位按根据分级保护管理办法和国家保密标准，对不同级别的涉信息系统采取相应的安全保密措施，确保既不“过防护”，也不“欠防护”。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

教育功能是教育在教育活动和教育系统对个体发展和社会发展的影响和作用，从不同的角度可以把教育功能划分为不同的类型