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【多选题】
永久磁铁的优点是( )。
A.
不用电源
B.
适用于在易燃易爆场所检验
C.
磁场强度大小可任意调节
D.
容易从工件上取下来
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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】电磁铁的铁芯（ ）
A.
采用钢棒，因为钢棒比铁棒硬
B.
采用铁棒，因为铁棒的磁性不能保留下来
C.
采用铁棒，因为铁棒价格较低
D.
采用钢棒，因为钢棒的磁性能够保留下来
【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.
The issue of rubbish-dealing can not be completely solved.
B.
Recycling plants will be in great need in rural areas.
C.
The plants can process a wide variety of materials.
D.
Effective ways of sorting out rubbish have long been in existence.
【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：
【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】电磁铁的铁芯（ ）
A.
采用钢棒，因为钢棒比铁棒硬
B.
采用铁棒，因为铁棒的磁性不能保留下来
C.
采用铁棒，因为铁棒价格较低
D.
采用钢棒，因为钢棒的磁性能够保留下来
【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.
The issue of rubbish-dealing can not be completely solved.
B.
Recycling plants will be in great need in rural areas.
C.
The plants can process a wide variety of materials.
D.
Effective ways of sorting out rubbish have long been in existence.
【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
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