刚性防水屋面要求基层变形大，一般只适用于有保温层的屋面。

刚性防水屋面要求基层变形大，一般只适用于有保温层的屋面。

刚性防水屋面适用于屋面结构刚度较大及地质条件较好的建筑。

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（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

防水材料分成柔性防水材料、刚性防水材料和（）类防水材料只三大类。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。