（）, 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。

网络营销的企业竞争是一种以（）为焦点的竞争形态.P电子商务师考试模拟试题

面对电子商务环境下的商业行为，建立数据电文法律制度、电子签名及其认证制度、完善电子合同和电子支付的动作程序成为电子商务法的主要内容。

面对电子商务环境下的商业行为，建立数据电文法律制度、电子签名及其认证制度、完善电子合同和电子支付的运作程序成为电子商务法的主要内容。（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

电子商务当事人订立和履行合同，适用（）等法律的规定。