根据中国人口分布的规律和成因，论证中国人口分布的合理性。

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.

中国少数民族人口虽少，但分布很广。中国民族成分最多的是（　　），有25个民族。

中国人口分布有哪些特点？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述世界及中国人口分布的特点。

中国现代心理学开创的标志是北京大学于（）年建立的心理学实验室。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。