简述布尔算符（OR）的作用。

考试员考试后应当当场公布考试成绩，但不必讲评考试不合格原因。

1.简述落叶的原因。

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.

西汉时期是谁从西域引进了葡萄栽培和酿造技术（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述柑桔保花保果的措施。

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？