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【单选题】

助磁法是迫使铁芯磁通迅速趋于()。

A.
B.
最大
C.
饱和
D.
最小
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题目标签:迫使铁芯磁通
参考答案:
参考解析:
.
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【单选题】没有穿过圆盘的电压磁通称为()。

A.
电流工作磁通
B.
电压工作磁通
C.
总磁通
D.
电压非工作磁通

【多选题】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(71 )When a person does a certain thing again, he is impelled(迫使) by some unseen force to do the same thing repeatedly; thus a habit is formed.Once a habit is ...

A.
There are other habits which, when formed in early life, are of great help.
B.
Whether good or not habits are, they are easy to get rid of.
C.
We ought to keep from all these bad habits, and try to form such habits as will prove good for ourselves and others.
D.
Habits, whether good or bad, are gradually formed.
E.
It is very important for us to know why we should get used to good habits.
F.
These are all easily formed habits.
G.
It is therefore very important that we should pay great attention to the formation of habits.