无氧运动的耐力性运动项目有：步行、慢跑、走跑交替、游泳、自行车等。

男：你会游泳吗？女：不会，但我很想学。男：那明天我们一起去游泳吧，我可以教你。女：好吧。问：谁会游泳？

到一个不熟悉的游泳场馆游泳时，首先应了解（）。

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（）.

游泳运动对人体的作用，谈谈你对游泳运动的认识与体会。

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。