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（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

霍尔元件是根据霍尔效应原理制成的磁电转换元件，常用（）及锑化铟等半导体材料制成。

在使用霍尔片时，减小霍尔片不等位电势通常最行之有效采用的方法是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

14.发动机每完成一个工作循环，曲轴转2周，分电器轴及触发叶轮转1周，霍尔元件被交替地隔离（　　）次，因而随之产生4次霍尔电压。