什么是影像匹配，影像匹配与影像相关的关系是什么？

核医学影像与其他影像比较（　）

核医学影像与其他影像比较（　）

DSA影像的形成过程影像的检测与显示→影像矩阵化与像素→A/D→数字逻辑运算→D/A→DSA影像。

影像信号是单极性的，只能是正值或负值。规定影像信号高电平（）处对应影像黑色，称为（）；影像信号低电平（）处对应影像白色，称为（），这种影像信号称为（）。电视标准规定影像信号的发送、接收一般多采用（）。

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。