简述搜索引擎的检索功能。

独立董事是指本身属于公司管理层，但与其所受聘的公司不存在妨碍其进行独立客观判断的关系的董事。 ( )

In Asia, where palm trees are non-native, the trees’ flowers have traditionally been pollinated by hand, which has kept palm fruit productivity unnaturally low. When weevils known to be efficient pollinators of palm flowers were introduced into Asia in 1980, palm fruit productivity increased—by up to fifty percent in some areas—but then decreased sharply in 1984.
Which of the following statements, if tree, would best explain the 1984 decrease in productivity ？（）

A．Prices for palm fruit fell between 1980 and 1984 following the rise in production and a concurrent fall in demand.

B．Imported trees are often more productive than native trees because the imported ones have left behind their pests and diseases in their native lands.

C．Rapid increases in productivity tend to deplete trees of nutrients needed for the development of the fruit-producing female flowers.

D．The weevil population in Asia remained at approximately the same level between 1980 and 1984.

E．Prior to 1980 another species of insect pollinated the Asian palm trees, but not as efficiently as the species of weevil that was introduced in 1980.

离合器.刹车气缸等是气动控制系统的执行机构。

1月19日，国务院常务会议原则通过的《国有土地上房屋征收与补偿条例》规定：政府是房屋征收与拆迁的主体，取消行政强制拆迁，超期不搬迁的，由政府申请法院强制执行。由此可见                           （   ）

A．国务院有权制定行政法规；

B．人民法院享有一定的行政管理权；

C．人民法院是国务院的执行机关；

D．国务院是全国人大的执行机关；

根据审计法的有关规定，下列说法正确的是( )

A．审计机关对与国计民生有重大关系的国有企业，应当不定期的进行审计

B．审计决定自作出之日起生效

C．地方各级审计机关只对上一级审计机关负责并报告工作，实行垂直领导

D．审计署在国务院 * * 的领导下，主管全国的审计工作