作物栽培方式有（）和（）两种。

作物栽培的特点有哪些？

出现考试焦虑的原因有哪些？处理考试焦虑有哪些要点？

影响鱼类繁殖力的主要因素有哪些？衡量鱼类繁殖力大小的主要指标有那几个？

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以下哪些情况会造成提示“Incorrect number or IP address”？（）

水生蔬菜有哪些种类，各类有何特点。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

栽培蔬菜的温室有些什么类型？