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【单选题】
The reason that the diffusion rate of CO2 through the respiratory membrane is faster than that of O2 isA.
C O2 is diffused by active transport.
B.
C O2 is diffused by facilitated transport.
C.
difference of partial pressure of C O2 is higher than that of O2 .
D.
molecular weight of C O2 is higher than O2 .
E.
solubility of C O2 in water is higher than that of O2 .
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【简答题】在什么情况下凸轮机构的从动杆才能得到运动的停歇？
【单选题】He is the very man ________ helped the girl out of the water.
A.
whose
B.
who
C.
he
D.
that
【简答题】在什么情况下凸轮机构的从动杆才能得到运动的停歇？
【简答题】电容器的特性是可以()和放电。
【简答题】在什么情况下凸轮机构的从动杆才能得到运动的停歇?
【判断题】He took the girl out hurriedly and the girl was a bit worried because she thought Henry was sometimes foolish.
A.
正确
B.
错误
【简答题】在什么情况下凸轮机构的从动杆才能得到运动的停歇?
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