与Ⅰ型超敏反应有关的生物活性介质是（　　）。

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.

Ⅳ型超敏反应皮试还可反映出机体细胞免疫功能的状态，是因为

Ⅳ型超敏反应皮试还可反映出机体细胞免疫功能的状态，是因为

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

关于Ⅳ型超敏反应的叙述，下列哪项是正确的（）

关于Ⅳ型超敏反应的叙述，下列哪项是正确的

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。