人力夯实土壤的相对密实度可达到（）。

砂土的相对密度Dr为0.5，其密实度可定为（）。

粘性土的物理状态特征主要指（）；无粘性土的物理状态特征主要指（）。一般用相对密实度Dr来表示密实度在现场一般用（）试验来测定密实度。

某建筑土质边坡，边坡土体为密实的碎石土，其充填物为硬塑状态的黏性土，边坡高度8m，其边坡坡率允许值为（）。

灾害材料学一般涉及到土木工程材料的一般力学性能有（）等等。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。