AK-47自动步枪中的“47”的含义是什么？

中国56式冲锋枪仿自AK-47突击步枪。

AK-47的设计师卡拉什尼科夫是哪国人（）。

AK-47突击步枪的保险如处在最下方时是（）

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。

贵州大学第二课堂管理细则大学生素质拓展的内容分为六大类，请问分别是什么？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。