（）, 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。

有效地评估试题和试卷质量是对试题的（）及试卷的结构和形式的评估。

与受体有较强的亲和力和内在活性的是（ ）。

只具有较强的亲和力而无内在活性(α=0)的药物称为( )。

与受体有较强的亲和力，但缺乏内在活

与受体有较强的亲和力，但缺乏内在活性的药物是

与受体有较强的亲和力，但内在活性较弱的是（ ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。