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【单选题】
Ca 2+ 逆浓度梯度通过细胞膜的运输方式是( )。
A.
易化扩散
B.
膜泡运输
C.
主动运输
D.
被动运输
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参考解析：
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【单选题】Task 4 Start your day off right with our continental breakfast free. Not only do we offer a generous variety of traditional continental foods, but also a couple of hot items each day. Too busy to sit ...
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