心绞痛胸痛发作持续时间一般不超过（）

心绞痛胸痛发作持续时间一般不超过（　　）。

稳定型心绞痛胸痛发作持续时间一般不超过（）

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.

心绞痛发作，持续时间长而服硝酸甘油片无效，即可排除心肌梗死的可能。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

典型心绞痛的发作性胸痛持续时间是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。