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【单选题】Questions 57 to 61 are based on the following passage. Within fif years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
attempts to find efficient ways of recycling wastes
B.
efforts to protect the environment in British cities
C.
a good way to locate plants for waste recycling
D.
a cheap way to get energy from waste materials
【单选题】Within fif years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. The word rubbish could lose its meaning because everythi...
A.
to get prepared to do
B.
to get along well with
C.
to try to complete
D.
to be very good at
相关题目：
【多选题】磁极特性有 ( )
A.
分南极，北极
B.
有磁力
C.
同名极互相排斥
D.
异名极互相吸引
E.
存在单独的正、负电荷
【单选题】Questions 57 to 61 are based on the following passage. Within fif years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. T...
A.
attempts to find efficient ways of recycling wastes
B.
efforts to protect the environment in British cities
C.
a good way to locate plants for waste recycling
D.
a cheap way to get energy from waste materials
【单选题】下列物体中磁铁不吸引的是（）
A.
一角硬币
B.
一元硬币
C.
铁钉
【单选题】把一条形磁铁从中间断开，得到的是（ ）
A.
一段只有N极，另一段只有S极的磁铁
B.
两段各有N极和S极的磁铁
C.
两段磁极无法确定的磁铁
D.
两段均无磁性的铁块
【单选题】两个极性不同的条形磁铁相互靠近时，它们会( )。
A.
相互排斥
B.
相互吸引
C.
互不理睬
D.
有时吸引、有时排斥
【单选题】永久磁铁的磁通是（）。
A.
随时间变化的
B.
不随时间变化的
C.
随温度变化的
D.
随环境变化
【判断题】通用设备常用低压控制电器有接触器、继电器、主令电器、控制器和电磁铁等。
A.
正确
B.
错误
【单选题】纯磁铁的分子式是（）。
A.
Fe2O3
B.
FeO
C.
Fe3O4
【单选题】在条形磁铁中，磁性最强的部位是（ ）。
A.
两极
B.
中间
C.
整体
D.
某段
【判断题】将一根条形磁铁截去一段仍为条形磁铁,它仍然具有两个磁极
A.
正确
B.
错误
【单选题】磁体都有2个磁极，即（）。
A.
S极和W极
B.
E极和N极
C.
S极和N极
D.
E极和W极
【单选题】在条形磁铁中,磁性最强的部位在
A.
中间
B.
两极
C.
整体
【判断题】如下图所示,当条形磁铁插入时,线圈两端的磁极是上N下S。
A.
正确
B.
错误
【单选题】Within fif years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste. The word rubbish could lose its meaning because everythi...
A.
to get prepared to do
B.
to get along well with
C.
to try to complete
D.
to be very good at
【判断题】地球是一块磁铁。
A.
正确
B.
错误