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【单选题】
下列有关电流参考方向的叙述正确的是()
A.
电流的参考方向是正电荷移动的方向
B.
电流的参考方向是负电荷移动的方向
C.
电流的参考方向是人为任意假定的方向
D.
电流的参考方向就是电流的实际流向
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参考答案:
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【简答题】It's not just that I've been illness-free, it's that I feel ___v___ and __s____. 我不但不生病,而且精力充沛,情绪饱满。
【判断题】血清中含量最多的是IgG,含量最少的是IgA。
A.
正确
B.
错误
【简答题】Yet I feel nothing more than a passing whim to 1 the material things so many other people have. My 1999 car shows the 2 of 105,000 miles. But it is still 3 . My apartment is 4 , but quiet and relaxing...
【单选题】这座山很有( )。
A.
气势
B.
气魄
【单选题】It's not so much that I dislike her _______ I'm just not interested.
A.
so that
B.
as that
C.
so
D.
as
【简答题】血清中含量最多的Ig
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