果树的根系通常由主根、侧根、须根组成

主根发达，主根和侧根有明显区别的根系称（）

根的类型、根系的类型有哪些？主根和侧根为什么又叫定根？不定根是由哪儿发生的？

词组有哪些基本结构类型和非基本结构类型（举例说明）？“派你支援”和“希望你来”分别属于何种结构类型，为什么？

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.

荔枝的根系由主根、侧根、吸收根和大量的根毛组成，吸收根群主要集中分布在（）深的土层中。

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。