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【简答题】
If you want to know all the of living green, then you should visit Backsbottom Farm. Itis run by Rod and Jane, who have tried to be as as possible. They use a horse to the logs they cut from their woods. The fields are nourished by waste from the horse andtheir other a nimals rather than chemicals. They rely on a windmill to their electricity and when the wind the lights and they have to looking for the candles. Jane, who was brought up in a home where constant electric power was , admits it was hard to make the when they first arrived at the farm, butdds that they really their new way of life.
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参考答案:
举一反三
【判断题】EPON上下行数据传输各采用一根光纤实现。
A.
正确
B.
错误
【判断题】EPON系统中下行采用1490nm/上行采用1310nm的波长进行双向传输。()
A.
正确
B.
错误
【单选题】EPON传输下行采用()
A.
竞争方式
B.
广播方式
C.
空分方式
D.
时分方式
【简答题】EPON下行信号的传输采用 方式,上行信号的传输采用 方式。
【简答题】BSG其最主要控制策略是___。
【单选题】The local historians believe that McDonald' real purpose is ___the history.
A.
rewrite
B.
rebuild
C.
to rewrite
【判断题】1993年,我国精神疾病流行病学调查显示,我国患有精神病患者概率是1.5%。
A.
正确
B.
错误
【单选题】固定铅笔和手指的执笔器、固定在头上或手腕上的翻书装置等特殊器具,是用来帮助下列哪一类儿童的学习和活动的( )
A.
脑瘫
B.
癫痫症
C.
哮喘
D.
弱智
【简答题】Historians believe that the constitution was __________ by King Alexander.
【判断题】EPON下行信号传输采用的是TDMA时分复用的技术,上行信号传输采用的是广播的技术。
A.
正确
B.
错误
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