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.

如何进行横向排架的桩基布置？如何进行桩基纵向布置？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

渗渠布置方式：（）。

墙板布置方式以横向布置应用最多。

（）应当落实农田水利工程运行维护经费，保障运行维护工作正常进行。

墙板布置方式以横向布置应用最多。

纵向布置与横向布置选择方法

旱地田间渠-横向布置

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。