（）, 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 （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

大多数家畜的排卵类型为（）；水貂、猫、骆驼、兔为诱导性排卵或刺激性排卵

母兔为（）排卵。

母兔为（）排卵动物。

下列动物中，为诱导排卵适宜作排卵实验的动物是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。