软件维护是软件生命周期的固有阶段，一般认为各种不同的软件维护以（）维护所占的维护量最小。

软件维护是软件生命周期中的固有阶段，一般认为，各种不同的软件维护中以(52)所占的维护量最小。

可维护性是评价软件质量的重要方面，系统的可维护性通常包括(11)，(12)维护是为了扩充软件的功能或提高原有软件的性能而进行的维护活动。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。