非概率抽样又称为非随机抽样，是调查者根据自己的方便或主观判断抽取样本的方法.以下属于非概率抽样方法的有（）。

市场调查中最常见的非概率抽样调查是（）。

抽样调查方法中常见的非概率抽样包括（）

（）是指市场调查的组织形式，通常有市场普查、重点市场调查、典型市场调查、抽样市场调查、非概率抽样调查等。

翻译：With Average or With Particular Average（WA or WPA）（）

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。