用一台稳定度为0.1%的9V稳压电源做标准，采用微差法测量一个10V普通电源的输出电压Uo，要求测量误差ΔUo/Uo≤±0.5%，欲用1V量程的电压表测量微差电压，应选用几级的电压表？

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。

用0.5级100V和1.5级10V电压表，分别测量9V电压时，（）。

用0.5级100V和1.5级15V电压表分别测量10V电压，哪只表测量的数据比较准确（）。

测量电压时，要正确选用电压量程，如果被测电压大于电压表量程，必须采用（）的方法。

用一块量程为150伏的1.5级的电压表，测量一个10V左右的电压，其测量的绝对误差是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。