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（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

何谓自我概念，自我概念的类型有哪几种？

自我概念指个人对自己的看法，因此自我概念是主观的。

自我概念有哪几种类型，营销者应如何运用关于自我概念的知识？

自我认识包括个人自我概念、社会自我概念、自我理想和（）等四个方面的内容。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在自我概念的诸多变体中，对消费者行为影响最大的两种形式是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。