什么决定接发球员是否已经准备好了：( )

发球时，接发球员的同伴接到球或被球触及，则应判违例

乒乓球比赛时选择发球、接发球和方位的权力应由（）来决定。中签者可以选择先接球或先接发球，或选择先在某一方位。

在双打比赛中，每次换发球时，前面的接发球员应成为发球员，前面的发球员的同伴应成为接发球员。

发球员和接发球员都必须站在斜对角发球区内发球和接发球。

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。