砌体的局部抗压强度主要取决于砌体原有的轴心抗压强度和周围砌体对局部受压区的约束程度。

砌体局部抗压强度提高的原因是什么？为什么砌体结构要进行局部受压验算？

砌体局部受压有哪些破坏形态？为什么砌体局部受压的抗压强度会有所提高？ 

砌体局部受压强度的提高，是因为：

砌体局部受压强度较普通受压强度有所提高，主要是因为（）

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。