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.

从唐末五代，经两宋至元朝，先后诞生了四个强大的少数民族政权：辽、西夏、金和元。其中，建立起中国历史上疆域空前辽阔的统一多民族国家的少数民族是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

元朝时期，中原地区的税粮分（）和地税两种

在新的历史时期，大学生应继续坚持以振兴中华为己任，努力做到（）。

元朝是中国历史上首个大一统的少数民族王朝。她疆域辽阔，民族众多。以下事件发生在元朝的是（）①建立了蒙古国②将西藏纳入行政版图③灭掉西夏政权④开凿了山东的会通河

元朝时我国疆域版图最大

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。