（）, 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 （）.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

Banks have no liability for any delay or loss caused by postal or telex failure.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

某农村小学一年级原来从未开设英语课程。这学期新开设了英语课程。开学一段时间之后，语文教师发现，学生对拼音字母的学习掌握，比以前历届一年级学生都要困难一些，学生常常把拼音和英语字母混淆，多花了不少教学时间，才达到相同的教学效果。 阅读以上材料，从教育心理学角度，简要分析学生学习过程中的这种现象。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。