MRI扫描显示主动脉弓和升主动脉、降主动脉的方法是（）

主动脉由左心室发出，按行程分为升主动脉、（）和降主动脉。

主动脉根部的主动脉窦包括（　　）。

主动脉干可分为（）、胸主动脉和（）。

与主动脉瓣相对的主动脉壁向外膨出，半月瓣与主动脉壁之间的袋状间隙名为主动脉窦。

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.

仅累及升主动脉的主动脉夹层为（）

下列哪项是主动脉夹层在主动脉血管造影直接征象？（　　）

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。