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【单选题】
K + 由细胞内向细胞外的跨膜转运属于A.
单纯扩散
B.
扩散
C.
主动转运
D.
出胞
E.
入胞
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举一反三
【单选题】In the writer's opinion it would be better if people ______.
A.
were forced to take a diploma
B.
were free to become educated in their own way
C.
attended more practical courses
D.
attended courses intended for experts
【单选题】Tens of thousands of 18-year-olds will graduate this year and be handed meaningless diplomas. These diplomas won't look any different from those awarded their luckier classmates. Their validity will b...
A.
view point on learning.
B.
a qualified teacher.
C.
the importance of examination.
D.
the generation gap.
【简答题】Diplom- Kaufmann
【单选题】输送系统的管路特性方程可表示为H e =K+BQ e 2 ,则( )。
A.
K只包括单位质量的流体需增加的位能
B.
K 包括单位质量的流体需增加的位能和静压能
C.
BQ e 2 代表管路系统的局部阻力损失
D.
BQ e 2 代表单位质量的流体需增加的动能
【简答题】Diplom- Ingenieur(in)
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