（）, 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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

高级放样命令包括（）

高级放样命令包括（）

在3dmax中，要使摄像机的构图与透视视口的构图一样，需要使用哪个命令（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在3DMAX环境中，执行“文件/打开”命令时，可以打开的文件类型是（）。