牙冠上三面相交所成的角称

位于口腔本部，上颌中切牙近中交界线应以之为准的解剖标志是()

上中切牙唇面距离切牙乳突中点的距离是（）

唇高线与平面间距离应为上颌中切牙唇面高度的（）

系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。

Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）

翻译：With Average or With Particular Average（WA or WPA）（）

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.

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。