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【单选题】
取一闭合积分回路L,使三根载流导线穿过它所围成的面。现改变三根导线之间的相互间隔,但不越出积分回路,则A.
回路L内的 不变,L上各点的 不变
B.
回路L内的 改变,L上各点的 不变
C.
回路L内的 不变,L上各点的 改变
D.
回路L内的 改变,L上各点的 改变
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举一反三
【单选题】Even today, (through) the (hustle and bustle) of Nevsky Prospect, St. Petersburg's main street, the (classical) beauty of the city (mesmerizes) the eye.
A.
through
B.
hustle and bustle
C.
classical
D.
mesmerizes
【单选题】Those who even fail to complete their high school studies ______.
A.
are unlikely to find stable employment until the age of 25
B.
usually attend vocational schools to get the required skills
C.
cannot find any jobs at all until the age of 25
D.
usually find jobs in the service industry
【简答题】破碎废坯时,一般()并采用人工给料。
【判断题】The periodic even stores information about how elections are arranges in the atoms of each element.
A.
正确
B.
错误
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