购买消毒剂时要注意什么？

如果游客购买古玩或仿古艺术品，导游员在提供服务时要注意（）。

物理性消毒法有：日光消毒法、干燥消毒法和（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

从空间维度来看，中外考试比较具有很强的（）。

从时间维度来看，中外考试比较具有很强的（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。