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【单选题】
根据设备的绝缘水平和造价，以下几个电压等级中，允许操作过电压倍数最高的是（）。
A.
500kV
B.
220kV
C.
110kV
D.
35kV及以下
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【单选题】It can be inferred from the passage that clay is LEAST likely to be plentiful in which of the following areas?
A.
In desert sand dunes
B.
In forests
C.
On hillsides
D.
Near rivers
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最好使用专门的溶剂冲洗
B.
宜采用大流量,使管路中流速达到紊流
C.
冲洗中用铜锤敲打各焊口
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【单选题】自 20 世纪 50 年代 , 荷兰的兰斯塔德地区经过多次空间规划 , 形成城市在外、郊区在内的空间特征 : 该区中间是一个接近 3 000 平方千米的 “ 绿心 ”—— 乡村地带 ; 四个核心城市和其他城镇呈环状分布在 “ 绿心 ” 的周围 , 城镇之间设置不可侵占的绿地。四个核心城市各具特殊职能 , 各城市分工明确 , 通过快速交通系统连接成具有国际竞争力的城市群。近 20 年来 , 该地区城...
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【单选题】Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient a longer, better life. Sadly, every year thousands of other people are l...
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they are unlucky patients
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【单选题】对流散热是以下哪种散热形式的特殊形式?
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【单选题】Who benefited the least from fridges according to the author?
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【单选题】【B15】
A.
a variety of
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from the start
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not the least
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【简答题】Who benefited the least from fridges according to the author?
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【单选题】Students are offered with opportunities to integrate what they learned from the text into their existing knowledge and communicate with others using the information in the listening text. This descrip...
A.
pre-listening
B.
while-listening
C.
post-listening
D.
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【单选题】It can be inferred from the passage that clay is LEAST likely to be plentiful in which of the following areas?
A.
In desert sand dunes
B.
In forests
C.
On hillsides
D.
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查看完整题目与答案
【单选题】关于冲洗液压系统的不正确说法是
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最好使用专门的溶剂冲洗
B.
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【单选题】Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient a longer, better life. Sadly, every year thousands of other people are l...
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【单选题】对流散热是以下哪种散热形式的特殊形式?
A.
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查看完整题目与答案
【简答题】Who benefited the least from fridges according to the author?
查看完整题目与答案
【单选题】Students are offered with opportunities to integrate what they learned from the text into their existing knowledge and communicate with others using the information in the listening text. This descrip...
A.
pre-listening
B.
while-listening
C.
post-listening
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查看完整题目与答案