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。

下面文学常识有误的一项是（）

下面不属于电影的艺术定位的一项是：（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

下面文学常识的表述有错误的一项是（）。

下面文学常识的表述有错误的一项是（）。

下面文学常识的表述有错误的一项是（ ）。