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【单选题】

永久磁铁中磁畴:

A.
以固定位置排列,各方向互相抵消
B.
以固定位置排列,一个方向上占有优
C.
材料呈现高矫顽力
D.
全部向一个方向排列
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参考答案:
举一反三

【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】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】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

【单选题】永久磁铁属于( )材料。

A.
硬磁材料
B.
软磁材料
C.
弱磁材料
D.
反磁材料

【单选题】永久性磁铁中磁畴( )。

A.
以固定位置排列,方向互相抵消
B.
以固定位置排列,在一个方向占优势
C.
无规则的排列
D.
与金属晶粒结构相同

【单选题】名词翻译:磁铁

A.
calendar
B.
magnet
C.
landmark
D.
fat
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】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】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
【单选题】永久磁铁属于( )材料。
A.
硬磁材料
B.
软磁材料
C.
弱磁材料
D.
反磁材料
【单选题】永久性磁铁中磁畴( )。
A.
以固定位置排列,方向互相抵消
B.
以固定位置排列,在一个方向占优势
C.
无规则的排列
D.
与金属晶粒结构相同
【单选题】名词翻译:磁铁
A.
calendar
B.
magnet
C.
landmark
D.
fat
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