外压容器圆筒体的不圆度是造成其失稳的主要原因。

何为外压失稳，防止压力水管外压失稳的措施有哪些？

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。

外压的短圆筒，失稳时，出现的波形个数为：（）

夹套容器的外圆筒一般承受外压，而内圆筒则是一个承受内压的壳体。

外压容器圆筒体的不圆度是造成其失稳的主要原因。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。