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【单选题】
以下哪一项( )可用来描述中介者(Mediator)。A.
提供一种方法顺序访问一个聚合对象中各个元素，而又不需要暴露该对象
B.
将抽象部分与它的现实部分分离，使它们都可以独立变化
C.
定义一个用于创建对象的接口，让子类决定实例化哪一个类
D.
用一个中介对象来封装一系列的对象交互
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【单选题】The film is _________ the people who risk their lives combating against the infectious virus.
A.
catered to
B.
dedicated to
C.
subscribed to
D.
tumbled to
【单选题】When combating a major electrical fire at sea, the main consideration is ___.
A.
reducing the possibility of electrical shock to personnel
B.
preventing a total loss of electrical power
C.
preventing saltwater damage to electrical equipment
D.
eliminating the toxic fumes from burning insulation
【单选题】The key strategies in combating cultural diversities include the following EXCEPT
A.
understanding and acceptance of differences．
B.
stable institutional policies，practices，and procedures．
C.
equal distribution of organizational resources．
【单选题】Which of the following fire extinguishing agents is the safest to use when combating a Class C fire?
A.
CO2
B.
Foam
C.
Water fog
D.
Soda acid.
【单选题】How I wish I ________ in medicine instead of history when I was at college!
A.
had majored
B.
should major
C.
majored
D.
would major
【单选题】Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?
A.
CO2
B.
Foam
C.
Water fog
D.
Soda acid
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