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。

黑龙江大学大学生安全教育课是新生公共课。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

某小学四（3）班语文老师要求学生用“如果……就……只能……’’的句式来谈谈自己的理想。学生甲：“我妈妈常对我说，‘如果你不好好学习，就考不上大学，考不上大学，只能去当清洁工’。”学生乙：“我爸爸常教育我，‘知果你不好好学习，就考不上好大学，考不上好大学，只能像我一样去打工’。”学生丙：“老师经常告诉我们……”全班绝大多数学生的理想都是“好好学习，考上大学”，像电脑里设置的固定答案一样。你如何看待“好好学习，考上大学”成为绝大多数学生唯一理想的现象？