小分子的香豆素类不具有

1、高分子材料与小分子化合物相比具有什么特点？

小分子游离香豆素不具有的性质是

天然气的分子量是天然气的（）

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。

天然气分子间（）很大，随着外界压力的增加气体体积可以缩小，天然气具有可压缩性。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。