送茶水时有杯把的茶杯，茶杯把一律朝向客户（）

请客人喝茶时，应用双手奉上茶杯，茶杯应放在客人（）。

盛有l00克水的茶杯，用0.9米长的绳子拴着．一人拿着另一端使茶杯在竖直平面上做圆周运动．求：　 （1）当茶杯到达最高点且速度为6米/秒时，茶杯受到压力多大？　 （2）当茶杯在最高点的速度小于多大时，水将离开茶杯掉下？

茶杯：咖啡：植物

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.

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。