物质的磁性可以分为哪几类，其磁性强弱如何？

下列测力传感器中，属于发电型测力传感器的是（）

GS型磁性测力称重仪如何调整零点？

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。

磁性定位测井测量的对象是（）。

调整平衡系数时，先要调整称重。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。