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 （）.

社区营养教育中的单向交流的过程为：来源→信息→加工→渠道→解码→受者。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

社区常见的营养问题是（）

确定社区存在的主要营养问题需要关注哪类社区居民最易发生与家庭收入相关的问题。

社区营养问题调查常用的方法是 ( )

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

某社区对辖区居民进行了营养教育干预活动，现要对该项目进行过程评价。对该项目进行过程评价包括（）