地下害虫的为害特点和防治方法？

系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。

Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）

植物有害生物防治的基本原则是：预防为主，综合防治。

翻译：With Average or With Particular Average（WA or WPA）（）

潜叶蝇的为害特点和防治方法？

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。

菟丝子害通常使植物表现为（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。