Photoshop中提供的模糊滤镜命令可以处理图像各种模糊效果。使用（）命令可使图像以某一中心点进行模糊。

在Photoshop中，（）滤镜可以使图像中过于清晰或对比度过于强烈的区域，产生模糊效果，也可用于制作柔和阴影。

可以在（）阶段采用Make-or-buy决策分析。

photoshop图层不可以删除。

Photoshop中背景层不可以执行滤镜效果。

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。