为了提高教育质量，各国在教育改革措施上有哪些共同趋势？

简述世界学前教育课程改革趋势。

世界高等教育结构改革的总趋势是（）。

课程改革是当代世界各国教育改革的基本需求，下列选项中符合这一时期课程改革的共同发展趋势的有（　　）。

（）在1898年在美国哥伦比亚大学讲授比较教育学，标志着比较教育学正式登上大学的讲堂。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。