旅游者与旅游经营者发生纠纷，旅游者一方人数众多并有共同请求的，应当怎么做？

旅游者与旅游经营者发生纠纷时，旅游者一方人数众多并有共同请求的，可以推选代表人参加（）活动。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, 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（）.

李平的父母当年在郑州邂逅，25年后，他们重到郑州，这是（）旅游动机。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

（），是旅游的主体，也是旅游活动中最活跃的因素。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。