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。

提出“以七字富天下”“以九字安天下”“以六字强天下”的教育家是（）。

简化太极24式的练习时长是（）

新型工业化道路的七字本质中，主要体现量的规定性的是（）

以下哪个选项不是练习微笑的要领（）

太极拳动作特点是处处带有形，练习时也对身体和心理有要求，正确答案是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。