屋顶无土种植式和屋顶覆土种植式没有以下哪种优势（）。

屋顶绿化的类型有移动花钵式、屋顶花园式、固定花坛式和（）。

在系统设计时，必须按照以下五个方面进行，即建设目标、（）、主要技术路线、方案设计原则和设备选型原则。

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。

品种标准的内容通常包括（）、（）和（），栽培技术要点。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

（）和（）是现代无土栽培的先驱。