对脑血管梗死的危险因素进行了病例对照研究，脑血管梗死患者100人，其中A型性格45人，非脑血管梗死患者100人，A型性格25人，A型性格的OR值为

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

88名学生参加运动会，参加游泳比赛的有23人，参加田径比赛的有33人，参加球类比赛的有54人，既参加游泳比赛又参加田径比赛的有5人，既参加田径比赛又参加球类比赛的有16人。已知每名学生最多可参加两项比赛，问只参加田径比赛的有多少人（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

传、接棒阶段可细分为（）、（）、（）、（）和（）5个阶段。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。