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（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

梁启超中国近代史上著名的政治活动家、启蒙思想家、资产阶级宣传家、教育家、史学家和文学家。戊戌维新运动领袖之一。1901至1902年，先后撰写了《中国史叙论》和《新史学》，批判封建史学，发动“（）”。

北魏郦道元写的（），既是一部地理著作，又有很高的文学价值。

北魏贾思勰撰写的我国现存第一部内容完整的农书是（）。

北魏贾思勰撰写的我国现存第一部内容完整的农书是（ ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。