药用作物栽培是指药用作物的栽培加工过程，包括选地、整地、播种、育苗、（）、采收和初加工等整个生产过程。

“有机蔬菜”、“绿色蔬菜”、“无公害蔬菜”，按照要求从宽到严排序，争取的是（）？

何谓作物的水分平衡？以育苗移栽为例说明作物栽培中如何维持作物的水分平衡。

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。

下列不属于蔬菜嫁接育苗常用方法的是（）。

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？