上颌窦开口于（）
前筛窦开口于（）
后筛窦开口于（）
蝶窦开口于（）
额窦开口于（）

腮腺导管开口于（）处，下颌下腺导管开口于（）.

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

婴幼儿鼻泪管________，开口部瓣膜发育不全，上呼吸道感染时易引起__________。

鼻泪管末端的开口部位是( )

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。