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【单选题】Animal studies are under way, human trial protocols are taking shape and drug makers are on alert. All the international health community needs now is a human vaccine for the bird flu pandemic sweepin...
A.
it has strong side effect to the elderly.
B.
it may turn ineffective in a short period.
C.
it is useless in preventing the virus.
D.
it hasn’t been tested in humans.
【单选题】对于物理吸附的描述中，哪一条是不正确的（ ）
A.
吸附力来源于范德华力 ， 其吸附一般不具有选择性
B.
吸附层可以是单分子层或者双分子层
C.
吸附速率较小
D.
吸附热较小
相关题目：
【单选题】Animal studies are under way, human trial protocols are taking shape and drug makers are on alert. All the international health community needs now is a human vaccine for the bird flu pandemic sweepin...
A.
it has strong side effect to the elderly.
B.
it may turn ineffective in a short period.
C.
it is useless in preventing the virus.
D.
it hasn’t been tested in humans.
【单选题】对于物理吸附的描述中，哪一条是不正确的（ ）
A.
吸附力来源于范德华力 ， 其吸附一般不具有选择性
B.
吸附层可以是单分子层或者双分子层
C.
吸附速率较小
D.
吸附热较小
参考解析：
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