若设定的条件表达式为“＜60 Or＞100”，则表示( )。

劳动力成为商品是货币转化为资本的前提，劳动力成为商品必须具备的条件是

简答题：网络信息检索的技巧有哪些？

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。

参加导游资格证考试的必备条件有（）。

（简答题）简述一下影响劳动生产率高低的因素有哪些？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。