体育课程是我国高等学校教学计划中的基本课程之一，使高校体育工作的中心环节，也是实现高校体育目的的（）

水上救生的材料有：（）、聚苯乙烯硬质塑料、聚乙烯、聚氯乙烯等。

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。

游泳池和水上游乐池循环水的水流组织，应符合的要求有（ ）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

经营水上游乐设施的单位在水滑梯出口处至少设()名救生员。

《游乐设施安全技术监察规程(试行)》规定：经营水上游乐设施的单位在水滑梯出口处至少设()名救生员。