来球较低且落点在身体附近时，运动员在身体姿势很低的情况下进行的垫球叫（）。

乒乓球比赛中在“来球紧逼身体的情况下”使用（）更合适。

可以在（）阶段采用Make-or-buy决策分析。

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.

垫击时，来球力量较大，垫击的距离近时，垫击的用力应（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

与不同关系的人交谈时，双方应保持相应的交谈距离。如与陌生人交谈时，两人的间距约为（）米左右；与熟人交谈时，相距（）米左右；与亲友交谈时，距离（）米左右。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。