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【单选题】
Each day of Earth Week, for example, has been given over to a separate environmental issue. They are, 【C1】______ , energy efficiency, re-cycling, water 【C2】______ , alternative transportation, pollutant information and outdoor 【C3】______ . Each one, as you can see, is wholly concerned with human problems, human systems, human safety and 【C4】______ how (American) humans can go on living 【C5】______ the same material level over the long haul 【C6】______ messing things up for them-selves. 【C7】______ on that list is there any consideration of what are thought to be animals (or trees or rivers) rights nowhere any regard for the ongoing 【C8】______ of species caused by humans nowhere a 【C9】______ for the countless other species that are being 【C10】______ daily by the destruction and poisoning of habitats nowhere any thought given to the 【C11】______ of the natural systems of the living earth and learning to live in them as the first people did. 【C12】______ all, nowhere on the list is there found any consideration of wilderness, of the need for a healthy earth to have places where humans don't 【C13】______ , where the full complexity and diversity of life are allowed to 【C14】______ unaffectedly. All that the Earth Day people can see is something called 'just think of the 【C15】______ ' of 'outdoors', and all they can think of doing there is human 'recreation'. The reason that is important is that 【C16】______ the human understands itself as a species 'reapplies for membership in the biosphere', as the eco-historian Thomas Berry has 【C17】______ it, 'it will never stop treating the earth and its treasures (resources) as the rightful food for its omnivorous maw (杂食性动物的胃), will never stop acting as if it owns the earth and has the right of control 【C18】______ its species'. This is a matter of passing laws or double-panning windows this is a deep reordering of values, a new (and very' old) way of understanding the earth and its species as sacred, an ecological 【C19】______ that go right to the heart of our lives. Without it no 【C20】______ changes will come, or last. 【C1】
A.
of course
B.
on condition
C.
in practice
D.
with regards
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举一反三
【判断题】abstract和 final 关键可以同时修饰一个类。( )
A.
正确
B.
错误
【单选题】关于影响国际分工发展的因素,下列说法错的是 ( )。
A.
社会生产力是国际分工形成和发展的决定性因素
B.
自然条件是国际分工产生和发展的基础
C.
国家性质决定了其在国际分工中的地位
D.
人口劳动规模和市场制约着国际分工的发展
【判断题】钢的淬透性主要取决于冷却速度。
A.
正确
B.
错误
【判断题】判断下面的概念是否正确:传递函数只取决于系统或元件的结构和参数。
A.
正确
B.
错误
【单选题】下列哪个叙述是正确的? A.可以同时用final和abstract修饰一个类。 B.final类至多可以有一个子类。 C.子类可以用super关键字调用父类的父类中的方法。 D.子类和父类不必在同一个包中。
A.
B.
C.
D.
D
【单选题】关于影响国际分工发展的因素,下列说法错误的是 ( )。
A.
社会生产力是国际分工形成和发展的决定性因素
B.
自然条件是国际分工产生和发展的基础
C.
国家性质决定了其在国际分工中的地位
D.
人口、劳动规模和市场制约着国际分工的发展
【单选题】下列哪个叙述是正确的? A. 在子类的构造方法中显示地写出super时,super关键字形成的语句必须是子类构造方法的第1条语句。 B. 子类和父类必须在一个包中。 C. 可以同时用final和abstract修饰同一个方法。 D. abstract类中,必须要有abstract方法。
A.
B.
C.
D.
D
【单选题】下面说法不正确的是( )。
A.
final 可修饰类、属性(变量)和方法
B.
abstract可修饰类、方法
C.
抽象方法只有方法头,没有方法体
D.
关键字final和abstract可以同时使用
【单选题】正弦交流电压的最大值与有效值之间的关系为______。
A.
U=1.414Um
B.
U=1.732Um
C.
Um=1.732U
D.
Um=1.414U
【单选题】下面说法错误的是( )
A.
final 可修饰类、属性(变量)、方法
B.
abstract 可修饰类、方法。
C.
抽象方法只有方法头,没有方法体。
D.
关键字final和abstract可以同时使用。
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