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【单选题】
关于钠-钾泵功能叙述正确的是A.
将细胞内K+转运出去
B.
将细胞外Na+转入细胞内
C.
转运等量的钠和钾
D.
维持细胞内外的离子浓度梯度
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皮皮学刷刷变学霸
举一反三
【单选题】He saluted as they passed. He saluted ____.
A.
while they had passed
B.
while they were passing
C.
though they were passing
D.
because they had passed
【单选题】以R134a代替过去常用的氟利昂作制冷剂，下列说法不对的是
A.
必须改用适于它的脂类润滑油
B.
不能用卤素捡漏灯
C.
不能用硅胶做干燥剂
D.
排气温度高需采用水冷
【单选题】He passed ______ hours in the library he acquired information relative to the subject he was going to expound.
A.
resulting
B.
resultative
C.
resultful
D.
resulted
【单选题】He passed ______ hours in the library he acquired information relative to the subject he was going to expound.
A.
resulting
B.
resultative
C.
resultful
D.
resulting
【单选题】—Jim’s passed the English exam, ______he? —I am not sure. Either you or he _____ passed it!
A.
hasn’t, have
B.
isn’t, has
C.
hasn’t, has
D.
wasn’t, have
【简答题】• USD4500 Beijing, 10th March • I beg you to pay to Bank of China , Beijing
or order providing the goods they supply are complied with contract the sum of
Five Thousand United Sta...
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