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【单选题】
下列跨膜运输的生理活动中，属于主动转运的是（）A.
酒精进入胃黏膜细胞
B.
CO2由静脉血进入肺泡内
C.
葡萄糖和氨基酸进入小肠绒毛上皮细胞
D.
甘油进入细胞
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皮皮学刷刷变学霸
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【简答题】频繁地、经常地
【单选题】There are two factors which determine an individual's intelligence. The first is the sort of brain he is born with. Human brains differ considerably, some being more capable than others. But no matter...
A.
Measuring Your Intelligence
B.
Intelligence and Environment
C.
The Case of Peter and Mark
D.
how the Brain Influences Intelligence
【判断题】Since straight B/L bears higher risk than the open B/L, it is rarely used in international transportation.
A.
正确
B.
错误
【单选题】打电话时,反映出个人的品德和修养,可以给对方一个良好的印象,哪么打电话时,哪一点是不可取的
A.
尽快接听电话，最好铃声不超过三次
B.
如通话结束，受话人先将电话挂断
C.
通话时，注意力要集中
D.
一般情况下，不在清晨、午睡、深夜或用餐时间打电话
E.
学习、开会期间应关掉手机
【简答题】adv . 经常地;定期地
【判断题】Since straight B/L bears a higher risk than the order B/L, it is rarely used in international transportation.
A.
正确
B.
错误
【判断题】There are two explanations of constant opportunity costs: (1) factors of production are imperfect substitutes for each other; (2) all units of a given factor have different qualities.
A.
正确
B.
错误
【判断题】Since straight B/L bears higher risk than the open B/L. it is rarely used in international transportation.
A.
正确
B.
错误
【单选题】There are two factors which determine an individual's intelligence. The first is the sort of brain he is born【B1】. Human brains differ considerably,【B2】being more capable than others.【B3】no matter how...
A.
for
B.
by
C.
with
D.
in
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