一般而言，抽样的样本占总体的比例同抽样误差成反向关系，即抽样比例越大，抽样误差相对越小。

一般来说，抽样的规模越小（）

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。

群体越小,就越简单,越正式。理想的小群体规模是5个人。在社会工作小组的工作中,理想的小组规模是8~12人。( )

（）是社会调查中最常用的资料收集方法，常用于较大规模的抽样调查。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。