哪一年，世界上第一台非线性编辑系统出现于美国( ) A．1985年 B．1975

下面说法不正确的是[ ]

A．三角形的面积一定，底和高成反比例

B．长方形的周长一定，长和宽不成比例

C．订阅《少年报》的份数和总钱数成正比例 

D．因为圆周长C= πd，所以π与d成反比例

依次填入画横线处的词语，最恰当的一组是( ) 阿富汗在历史上______外族的侵略，又处于十分复杂的地缘政治______之中。塔利班 * * 倒台之后，阿富汗国内各派政治力量为了国家的未来必须进行必要的妥协与和解，从而找到使他们相互______乃至______在一起的政治解决办法。否则，阿富汗势必重新陷入水深火热之中，成为欧亚大陆最具威胁的“火药桶”。

A．承受 格局 协同 凝结

B．备受 局势 协同 凝结

C．备受 格局 协调 凝聚

D．承受 局势 协调 凝聚

The Environmental Protection Agency must respond to the hazard to children’s health posed by exposure to asbestos fibers released in the air in school classrooms. Since it is impossible to close school buildings, the best plan would be to initiate programs that mandate the immediate removal of asbestos from all the school buildings that are found to contain asbestos, regardless of whether or not the buildings are in use.
Which of the following, if true, is the pest reason for the Environmental Protection Agency not to follow the plan outlined above

A．The techniques available for removing asbestos often increase the level of airborne asbestos.

B．Schools are places where asbestos is especially likely to be released into the air by the action of the occupants.

C．Children exposed to airborne asbestos run a greater risk of developing cancer than do adults exposed to airborne asbestos.

D．The cost of removing asbestos varies from school to school, depending on accessibility and the quantity of asbestos to be removed.

E．(E) It is impossible to determine with any degree of certainty if and when construction materials that contain asbestos will break down and release asbestos fibers into the air.

国华定电集中选择运行方式？

从业人员发现直接危及人身安全的紧急情况时，有权（）或者在采取可能的（）后撤离作业场所。